openapi: 3.0.3
info:
  title: Resend
  version: 1.5.0
  description: 'Resend is the email platform for developers.'
servers:
  - url: https://api.resend.com
security:
  - bearerAuth: []
tags:
  - name: Emails
    description: Start sending emails through the Resend API.
  - name: Domains
    description: Create and manage domains through the Resend API.
  - name: API Keys
    description: Create and manage API Keys through the Resend API.
  - name: Audiences
    description: 'Deprecated: Use Segments instead. Create and manage Audiences through the Resend API.'
  - name: Contacts
    description: Create and manage Contacts through the Resend API.
  - name: Receiving Emails
    description: Retrieve and manage received emails and attachments through the Resend API.
  - name: Webhooks
    description: Create and manage Webhooks through the Resend API.
  - name: Templates
    description: Create and manage Templates through the Resend API.
  - name: Broadcasts
    description: Create and manage Broadcasts through the Resend API.
  - name: Segments
    description: Create and manage Segments through the Resend API.
  - name: Topics
    description: Create and manage Topics through the Resend API.
  - name: Contact Properties
    description: Create and manage Contact Properties through the Resend API.
  - name: Logs
    description: Retrieve API request logs through the Resend API.
  - name: Automations
    description: Create and manage Automations through the Resend API.
  - name: Events
    description: Create and manage Events through the Resend API.
paths:
  /emails:
    post:
      tags:
        - Emails
      summary: Send an email
      parameters:
        - in: header
          name: Idempotency-Key
          required: false
          schema:
            type: string
            maxLength: 256
          description: A unique identifier for the request to ensure emails are only sent once. [Learn more](https://resend.com/docs/dashboard/emails/idempotency-keys)
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SendEmailRequest'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SendEmailResponse'
    get:
      tags:
        - Emails
      summary: Retrieve a list of emails
      parameters:
        - $ref: '#/components/parameters/PaginationLimit'
        - $ref: '#/components/parameters/PaginationAfter'
        - $ref: '#/components/parameters/PaginationBefore'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListEmailsResponse'
  /emails/{email_id}:
    get:
      tags:
        - Emails
      summary: Retrieve a single email
      parameters:
        - name: email_id
          in: path
          required: true
          schema:
            type: string
          description: The ID of the email.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Email'
    patch:
      tags:
        - Emails
      summary: Update a single email
      parameters:
        - name: email_id
          in: path
          required: true
          schema:
            type: string
          description: The ID of the email.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UpdateEmailOptions'
  /emails/{email_id}/cancel:
    post:
      tags:
        - Emails
      summary: Cancel the schedule of the e-mail.
      parameters:
        - name: email_id
          in: path
          required: true
          schema:
            type: string
          description: The ID of the email.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Email'
  /emails/batch:
    post:
      tags:
        - Emails
      summary: Trigger up to 100 batch emails at once.
      parameters:
        - in: header
          name: Idempotency-Key
          required: false
          schema:
            type: string
            maxLength: 256
          description: A unique identifier for the request to ensure emails are only sent once. [Learn more](https://resend.com/docs/dashboard/emails/idempotency-keys)
      requestBody:
        content:
          application/json:
            schema:
              type: array
              items:
                $ref: '#/components/schemas/SendEmailRequest'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CreateBatchEmailsResponse'
  /emails/{email_id}/attachments:
    get:
      tags:
        - Emails
      summary: Retrieve a list of attachments for a sent email
      parameters:
        - name: email_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
          description: The ID of the email.
        - name: limit
          in: query
          required: false
          schema:
            type: integer
          description: Maximum number of attachments to return.
        - name: after
          in: query
          required: false
          schema:
            type: string
            format: uuid
          description: Pagination cursor to fetch results after this attachment ID. Cannot be used with 'before'.
        - name: before
          in: query
          required: false
          schema:
            type: string
            format: uuid
          description: Pagination cursor to fetch results before this attachment ID. Cannot be used with 'after'.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListAttachmentsResponse'
  /emails/{email_id}/attachments/{attachment_id}:
    get:
      tags:
        - Emails
      summary: Retrieve a single attachment for a sent email
      parameters:
        - name: email_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
          description: The ID of the email.
        - name: attachment_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
          description: The ID of the attachment.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RetrievedAttachment'
  /emails/receiving:
    get:
      tags:
        - Receiving Emails
      summary: Retrieve a list of received emails
      parameters:
        - name: limit
          in: query
          required: false
          schema:
            type: integer
          description: Maximum number of received emails to return.
        - name: after
          in: query
          required: false
          schema:
            type: string
            format: uuid
          description: Pagination cursor to fetch results after this email ID. Cannot be used with 'before'.
        - name: before
          in: query
          required: false
          schema:
            type: string
            format: uuid
          description: Pagination cursor to fetch results before this email ID. Cannot be used with 'after'.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListReceivedEmailsResponse'
  /emails/receiving/{email_id}:
    get:
      tags:
        - Receiving Emails
      summary: Retrieve a single received email
      parameters:
        - name: email_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
          description: The ID of the received email.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GetReceivedEmailResponse'
  /emails/receiving/{email_id}/attachments:
    get:
      tags:
        - Receiving Emails
      summary: Retrieve a list of attachments for a received email
      parameters:
        - name: email_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
          description: The ID of the received email.
        - name: limit
          in: query
          required: false
          schema:
            type: integer
          description: Maximum number of attachments to return.
        - name: after
          in: query
          required: false
          schema:
            type: string
            format: uuid
          description: Pagination cursor to fetch results after this attachment ID. Cannot be used with 'before'.
        - name: before
          in: query
          required: false
          schema:
            type: string
            format: uuid
          description: Pagination cursor to fetch results before this attachment ID. Cannot be used with 'after'.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListAttachmentsResponse'
  /emails/receiving/{email_id}/attachments/{attachment_id}:
    get:
      tags:
        - Receiving Emails
      summary: Retrieve a single attachment for a received email
      parameters:
        - name: email_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
          description: The ID of the received email.
        - name: attachment_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
          description: The ID of the attachment.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RetrievedAttachment'
  /domains:
    post:
      tags:
        - Domains
      summary: Create a new domain
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateDomainRequest'
      responses:
        '201':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CreateDomainResponse'
    get:
      tags:
        - Domains
      summary: Retrieve a list of domains
      parameters:
        - $ref: '#/components/parameters/PaginationLimit'
        - $ref: '#/components/parameters/PaginationAfter'
        - $ref: '#/components/parameters/PaginationBefore'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListDomainsResponse'
  /domains/{domain_id}:
    get:
      tags:
        - Domains
      summary: Retrieve a single domain
      parameters:
        - name: domain_id
          in: path
          required: true
          schema:
            type: string
          description: The ID of the domain.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Domain'
    patch:
      tags:
        - Domains
      summary: Update an existing domain
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateDomainOptions'
      parameters:
        - name: domain_id
          in: path
          required: true
          schema:
            type: string
          description: The ID of the domain.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UpdateDomainResponseSuccess'
    delete:
      tags:
        - Domains
      summary: Remove an existing domain
      parameters:
        - name: domain_id
          in: path
          required: true
          schema:
            type: string
          description: The ID of the domain.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DeleteDomainResponse'
  /domains/{domain_id}/verify:
    post:
      tags:
        - Domains
      summary: Verify an existing domain
      description: Triggers verification of the domain's DNS records including DKIM, SPF, and the tracking CNAME (if a tracking subdomain is configured).
      parameters:
        - name: domain_id
          in: path
          required: true
          schema:
            type: string
          description: The ID of the domain.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/VerifyDomainResponse'
  /api-keys:
    post:
      tags:
        - API keys
      summary: Create a new API key
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateApiKeyRequest'
      responses:
        '201':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CreateApiKeyResponse'
    get:
      tags:
        - API keys
      summary: Retrieve a list of API keys
      parameters:
        - $ref: '#/components/parameters/PaginationLimit'
        - $ref: '#/components/parameters/PaginationAfter'
        - $ref: '#/components/parameters/PaginationBefore'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListApiKeysResponse'
  /api-keys/{api_key_id}:
    delete:
      tags:
        - API keys
      summary: Remove an existing API key
      parameters:
        - name: api_key_id
          in: path
          required: true
          schema:
            type: string
          description: The API key ID.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DeleteApiKeyResponse'
  /templates:
    post:
      tags:
        - Templates
      summary: Create a template
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateTemplateRequest'
      responses:
        '201':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CreateTemplateResponseSuccess'
    get:
      tags:
        - Templates
      summary: Retrieve a list of templates
      parameters:
        - $ref: '#/components/parameters/PaginationLimit'
        - $ref: '#/components/parameters/PaginationAfter'
        - $ref: '#/components/parameters/PaginationBefore'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListTemplatesResponseSuccess'
  /templates/{id}:
    get:
      tags:
        - Templates
      summary: Retrieve a single template
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Template ID or alias.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Template'
    patch:
      tags:
        - Templates
      summary: Update an existing template
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Template ID or alias.
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateTemplateOptions'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UpdateTemplateResponseSuccess'
    delete:
      tags:
        - Templates
      summary: Remove an existing template
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Template ID or alias.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RemoveTemplateResponseSuccess'
  /templates/{id}/publish:
    post:
      tags:
        - Templates
      summary: Publish a template
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Template ID or alias.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PublishTemplateResponseSuccess'
  /templates/{id}/duplicate:
    post:
      tags:
        - Templates
      summary: Duplicate a template
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Template ID or alias.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DuplicateTemplateResponseSuccess'
  /audiences:
    post:
      tags:
        - Audiences
      summary: Create a list of contacts
      deprecated: true
      description: 'Deprecated: Use Segments instead. These endpoints still work, but will be removed in the future.'
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateAudienceOptions'
      responses:
        '201':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CreateAudienceResponseSuccess'
    get:
      tags:
        - Audiences
      summary: Retrieve a list of audiences
      deprecated: true
      description: 'Deprecated: Use Segments instead. These endpoints still work, but will be removed in the future.'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListAudiencesResponseSuccess'
  /audiences/{id}:
    delete:
      tags:
        - Audiences
      summary: Remove an existing audience
      deprecated: true
      description: 'Deprecated: Use Segments instead. These endpoints still work, but will be removed in the future.'
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Audience ID.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RemoveAudienceResponseSuccess'
    get:
      tags:
        - Audiences
      summary: Retrieve a single audience
      deprecated: true
      description: 'Deprecated: Use Segments instead. These endpoints still work, but will be removed in the future.'
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Audience ID.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GetAudienceResponseSuccess'
  /contacts:
    post:
      tags:
        - Contacts
      summary: Create a new contact
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateContactOptions'
      responses:
        '201':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CreateContactResponseSuccess'
    get:
      tags:
        - Contacts
      summary: Retrieve a list of contacts
      parameters:
        - name: segment_id
          in: query
          required: false
          schema:
            type: string
          description: Filter contacts by segment ID.
        - $ref: '#/components/parameters/PaginationLimit'
        - $ref: '#/components/parameters/PaginationAfter'
        - $ref: '#/components/parameters/PaginationBefore'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListContactsResponseSuccess'
  /contacts/{id}:
    get:
      tags:
        - Contacts
      summary: Retrieve a single contact by ID or email
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Contact ID or email address.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GetContactResponseSuccess'
    patch:
      tags:
        - Contacts
      summary: Update a single contact by ID or email
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Contact ID or email address.
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateContactOptions'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UpdateContactResponseSuccess'
    delete:
      tags:
        - Contacts
      summary: Remove an existing contact by ID or email
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Contact ID or email address.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RemoveContactResponseSuccess'
  /broadcasts:
    post:
      tags:
        - Broadcasts
      summary: Create a broadcast
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateBroadcastOptions'
      responses:
        '201':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CreateBroadcastResponseSuccess'
    get:
      tags:
        - Broadcasts
      summary: Retrieve a list of broadcasts
      parameters:
        - $ref: '#/components/parameters/PaginationLimit'
        - $ref: '#/components/parameters/PaginationAfter'
        - $ref: '#/components/parameters/PaginationBefore'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListBroadcastsResponseSuccess'
  /broadcasts/{id}:
    delete:
      tags:
        - Broadcasts
      summary: Remove an existing broadcast that is in the draft status
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Broadcast ID.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RemoveBroadcastResponseSuccess'
    get:
      tags:
        - Broadcasts
      summary: Retrieve a single broadcast
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Broadcast ID.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GetBroadcastResponseSuccess'
    patch:
      tags:
        - Broadcasts
      summary: Update an existing broadcast
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Broadcast ID.
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateBroadcastOptions'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UpdateBroadcastResponseSuccess'
  /broadcasts/{id}/send:
    post:
      tags:
        - Broadcasts
      summary: Send or schedule a broadcast
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Broadcast ID.
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SendBroadcastOptions'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SendBroadcastResponseSuccess'
  /webhooks:
    post:
      tags:
        - Webhooks
      summary: Create a new webhook
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateWebhookRequest'
      responses:
        '201':
          description: Created
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CreateWebhookResponse'
    get:
      tags:
        - Webhooks
      summary: Retrieve a list of webhooks
      parameters:
        - name: limit
          in: query
          required: false
          schema:
            type: integer
          description: Maximum number of webhooks to return.
        - name: after
          in: query
          required: false
          schema:
            type: string
            format: uuid
          description: Pagination cursor to fetch results after this webhook ID. Cannot be used with 'before'.
        - name: before
          in: query
          required: false
          schema:
            type: string
            format: uuid
          description: Pagination cursor to fetch results before this webhook ID. Cannot be used with 'after'.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListWebhooksResponse'
  /webhooks/{webhook_id}:
    get:
      tags:
        - Webhooks
      summary: Retrieve a single webhook
      parameters:
        - name: webhook_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
          description: The Webhook ID.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GetWebhookResponse'
    patch:
      tags:
        - Webhooks
      summary: Update an existing webhook
      parameters:
        - name: webhook_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
          description: The Webhook ID.
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateWebhookRequest'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UpdateWebhookResponse'
    delete:
      tags:
        - Webhooks
      summary: Remove an existing webhook
      parameters:
        - name: webhook_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
          description: The Webhook ID.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DeleteWebhookResponse'
  /segments:
    post:
      tags:
        - Segments
      summary: Create a new segment
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateSegmentOptions'
      responses:
        '201':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CreateSegmentResponseSuccess'
    get:
      tags:
        - Segments
      summary: Retrieve a list of segments
      parameters:
        - $ref: '#/components/parameters/PaginationLimit'
        - $ref: '#/components/parameters/PaginationAfter'
        - $ref: '#/components/parameters/PaginationBefore'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListSegmentsResponseSuccess'
  /segments/{id}:
    get:
      tags:
        - Segments
      summary: Retrieve a single segment
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Segment ID.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GetSegmentResponseSuccess'
    delete:
      tags:
        - Segments
      summary: Remove an existing segment
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Segment ID.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RemoveSegmentResponseSuccess'
  /topics:
    post:
      tags:
        - Topics
      summary: Create a new topic
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateTopicOptions'
      responses:
        '201':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CreateTopicResponseSuccess'
    get:
      tags:
        - Topics
      summary: Retrieve a list of topics
      parameters:
        - $ref: '#/components/parameters/PaginationLimit'
        - $ref: '#/components/parameters/PaginationAfter'
        - $ref: '#/components/parameters/PaginationBefore'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListTopicsResponseSuccess'
  /topics/{id}:
    get:
      tags:
        - Topics
      summary: Retrieve a single topic
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Topic ID.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GetTopicResponseSuccess'
    patch:
      tags:
        - Topics
      summary: Update an existing topic
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Topic ID.
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateTopicOptions'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UpdateTopicResponseSuccess'
    delete:
      tags:
        - Topics
      summary: Remove an existing topic
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Topic ID.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RemoveTopicResponseSuccess'
  /contact-properties:
    post:
      tags:
        - Contact Properties
      summary: Create a new contact property
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateContactPropertyOptions'
      responses:
        '201':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CreateContactPropertyResponseSuccess'
    get:
      tags:
        - Contact Properties
      summary: Retrieve a list of contact properties
      parameters:
        - $ref: '#/components/parameters/PaginationLimit'
        - $ref: '#/components/parameters/PaginationAfter'
        - $ref: '#/components/parameters/PaginationBefore'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListContactPropertiesResponseSuccess'
  /contact-properties/{id}:
    get:
      tags:
        - Contact Properties
      summary: Retrieve a single contact property
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Contact Property ID.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GetContactPropertyResponseSuccess'
    patch:
      tags:
        - Contact Properties
      summary: Update an existing contact property
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Contact Property ID.
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateContactPropertyOptions'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UpdateContactPropertyResponseSuccess'
    delete:
      tags:
        - Contact Properties
      summary: Remove an existing contact property
      parameters:
        - name: id
          in: path
          required: true
          schema:
            type: string
          description: The Contact Property ID.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RemoveContactPropertyResponseSuccess'
  /contacts/{contact_id}/segments:
    get:
      tags:
        - Contacts
      summary: Retrieve a list of segments for a contact
      parameters:
        - name: contact_id
          in: path
          required: true
          schema:
            type: string
          description: The Contact ID or email address.
        - $ref: '#/components/parameters/PaginationLimit'
        - $ref: '#/components/parameters/PaginationAfter'
        - $ref: '#/components/parameters/PaginationBefore'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListContactSegmentsResponseSuccess'
  /contacts/{contact_id}/segments/{segment_id}:
    post:
      tags:
        - Contacts
      summary: Add a contact to a segment
      parameters:
        - name: contact_id
          in: path
          required: true
          schema:
            type: string
          description: The Contact ID or email address.
        - name: segment_id
          in: path
          required: true
          schema:
            type: string
          description: The Segment ID.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AddContactToSegmentResponseSuccess'
    delete:
      tags:
        - Contacts
      summary: Remove a contact from a segment
      parameters:
        - name: contact_id
          in: path
          required: true
          schema:
            type: string
          description: The Contact ID or email address.
        - name: segment_id
          in: path
          required: true
          schema:
            type: string
          description: The Segment ID.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RemoveContactFromSegmentResponseSuccess'
  /contacts/{contact_id}/topics:
    get:
      tags:
        - Contacts
      summary: Retrieve topics for a contact
      parameters:
        - name: contact_id
          in: path
          required: true
          schema:
            type: string
          description: The Contact ID or email address.
        - $ref: '#/components/parameters/PaginationLimit'
        - $ref: '#/components/parameters/PaginationAfter'
        - $ref: '#/components/parameters/PaginationBefore'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GetContactTopicsResponseSuccess'
    patch:
      tags:
        - Contacts
      summary: Update topics for a contact
      parameters:
        - name: contact_id
          in: path
          required: true
          schema:
            type: string
          description: The Contact ID or email address.
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateContactTopicsOptions'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UpdateContactTopicsResponseSuccess'
  /logs:
    get:
      tags:
        - Logs
      summary: Retrieve a list of logs
      parameters:
        - $ref: '#/components/parameters/PaginationLimit'
        - $ref: '#/components/parameters/PaginationAfter'
        - $ref: '#/components/parameters/PaginationBefore'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListLogsResponse'
  /logs/{log_id}:
    get:
      tags:
        - Logs
      summary: Retrieve a single log
      parameters:
        - name: log_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
          description: The ID of the log.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Log'
  /automations:
    post:
      tags:
        - Automations
      summary: Create an automation
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateAutomationRequest'
      responses:
        '201':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CreateAutomationResponse'
    get:
      tags:
        - Automations
      summary: Retrieve a list of automations
      parameters:
        - name: status
          in: query
          required: false
          schema:
            type: string
            enum:
              - enabled
              - disabled
          description: Filter automations by status.
        - $ref: '#/components/parameters/PaginationLimit'
        - $ref: '#/components/parameters/PaginationAfter'
        - $ref: '#/components/parameters/PaginationBefore'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListAutomationsResponse'
  /automations/{automation_id}:
    get:
      tags:
        - Automations
      summary: Retrieve a single automation
      parameters:
        - name: automation_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
          description: The ID of the automation.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Automation'
    patch:
      tags:
        - Automations
      summary: Update an automation
      parameters:
        - name: automation_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
          description: The ID of the automation.
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PatchAutomationRequest'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PatchAutomationResponse'
    delete:
      tags:
        - Automations
      summary: Delete an automation
      parameters:
        - name: automation_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
          description: The ID of the automation.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DeleteAutomationResponse'
  /automations/{automation_id}/stop:
    post:
      tags:
        - Automations
      summary: Stop an automation
      parameters:
        - name: automation_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
          description: The ID of the automation.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/StopAutomationResponse'
  /automations/{automation_id}/runs:
    get:
      tags:
        - Automations
      summary: Retrieve a list of automation runs
      parameters:
        - name: automation_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
          description: The ID of the automation.
        - name: status
          in: query
          required: false
          schema:
            type: string
          description: 'Filter runs by status. Comma-separated list of: running, completed, failed, cancelled.'
        - $ref: '#/components/parameters/PaginationLimit'
        - $ref: '#/components/parameters/PaginationAfter'
        - $ref: '#/components/parameters/PaginationBefore'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListAutomationRunsResponse'
  /automations/{automation_id}/runs/{run_id}:
    get:
      tags:
        - Automations
      summary: Retrieve a single automation run
      parameters:
        - name: automation_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
          description: The ID of the automation.
        - name: run_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
          description: The ID of the automation run.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AutomationRun'
  /events:
    post:
      tags:
        - Events
      summary: Create an event
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateEventRequest'
      responses:
        '201':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/CreateEventResponse'
    get:
      tags:
        - Events
      summary: Retrieve a list of events
      parameters:
        - $ref: '#/components/parameters/PaginationLimit'
        - $ref: '#/components/parameters/PaginationAfter'
        - $ref: '#/components/parameters/PaginationBefore'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListEventsResponse'
  /events/send:
    post:
      tags:
        - Events
      summary: Send an event
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/SendEventRequest'
      responses:
        '202':
          description: Accepted
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SendEventResponse'
  /events/{identifier}:
    get:
      tags:
        - Events
      summary: Retrieve a single event
      parameters:
        - name: identifier
          in: path
          required: true
          schema:
            type: string
          description: The event ID (UUID) or event name.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Event'
    patch:
      tags:
        - Events
      summary: Update an event
      parameters:
        - name: identifier
          in: path
          required: true
          schema:
            type: string
          description: The event ID (UUID) or event name.
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateEventRequest'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/UpdateEventResponse'
    delete:
      tags:
        - Events
      summary: Delete an event
      parameters:
        - name: identifier
          in: path
          required: true
          schema:
            type: string
          description: The event ID (UUID) or event name.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RemoveEventResponse'
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
  parameters:
    PaginationLimit:
      in: query
      name: limit
      required: false
      schema:
        type: integer
        minimum: 1
        maximum: 100
      description: Number of items to return.
    PaginationAfter:
      in: query
      name: after
      required: false
      schema:
        type: string
      description: Return items after this cursor.
    PaginationBefore:
      in: query
      name: before
      required: false
      schema:
        type: string
      description: Return items before this cursor.
  schemas:
    SendEmailRequest:
      type: object
      required:
        - from
        - to
        - subject
      properties:
        from:
          type: string
          description: Sender email address. To include a friendly name, use the format "Your Name <sender@domain.com>".
        to:
          description: Recipient email address. For multiple addresses, send as an array of strings. Max 50.
          oneOf:
            - type: string
            - type: array
              items:
                type: string
              minItems: 1
              maxItems: 50
        subject:
          type: string
          description: Email subject.
        bcc:
          description: Bcc recipient email address. For multiple addresses, send as an array of strings.
          oneOf:
            - type: string
            - type: array
              items:
                type: string
        cc:
          description: Cc recipient email address. For multiple addresses, send as an array of strings.
          oneOf:
            - type: string
            - type: array
              items:
                type: string
        reply_to:
          description: Reply-to email address. For multiple addresses, send as an array of strings.
          oneOf:
            - type: string
            - type: array
              items:
                type: string
        html:
          type: string
          description: The HTML version of the message.
        text:
          type: string
          description: The plain text version of the message.
        template:
          allOf:
            - $ref: '#/components/schemas/EmailTemplateInput'
            - description: Use a published template to send the email. If provided, do not include html or text.
        headers:
          type: object
          description: Custom headers to add to the email.
        scheduled_at:
          type: string
          description: Schedule email to be sent later. The date should be in ISO 8601 format.
        attachments:
          type: array
          items:
            $ref: '#/components/schemas/Attachment'
        tags:
          type: array
          items:
            $ref: '#/components/schemas/Tag'
        topic_id:
          type: string
          description: The topic ID to scope the email to. If the recipient is a contact and opted-in to the topic, the email is sent. If opted-out, the email is not sent. If the recipient is not a contact, the email is sent if the topic's default subscription is opt_in.
    Attachment:
      type: object
      properties:
        content:
          type: string
          format: binary
          description: Content of an attached file.
        filename:
          type: string
          description: Name of attached file.
        path:
          type: string
          description: Path where the attachment file is hosted
        content_type:
          type: string
          description: Optional content type for the attachment, if not set it will be derived from the filename property
        content_id:
          type: string
          description: Content ID for embedding inline images using cid references (e.g., cid:image001).
    Tag:
      type: object
      properties:
        name:
          type: string
          description: The name of the email tag. It can only contain ASCII letters (a–z, A–Z), numbers (0–9), underscores (_), or dashes (-). It can contain no more than 256 characters.
        value:
          type: string
          description: The value of the email tag.It can only contain ASCII letters (a–z, A–Z), numbers (0–9), underscores (_), or dashes (-). It can contain no more than 256 characters.
    EmailTemplateInput:
      type: object
      properties:
        id:
          type: string
          description: The id of the published email template.
        variables:
          type: object
          additionalProperties:
            oneOf:
              - type: string
              - type: number
          description: Template variables object with key/value pairs.
          example:
            variableName: 'Sign up now'
            variableName2: 123
      required:
        - id
    SendEmailResponse:
      type: object
      properties:
        id:
          type: string
          description: The ID of the sent email.
    UpdateEmailOptions:
      type: object
      properties:
        scheduled_at:
          type: string
          description: Schedule email to be sent later. The date should be in ISO 8601 format.
    Email:
      type: object
      properties:
        object:
          type: string
          description: The type of object.
          example: 'email'
        id:
          type: string
          description: The ID of the email.
          example: '4ef9a417-02e9-4d39-ad75-9611e0fcc33c'
        to:
          type: array
          items:
            type: string
            description: The email addresses of the recipients.
          example: ['delivered@resend.dev']
        from:
          type: string
          description: The email address of the sender.
          example: 'Acme <onboarding@resend.dev>'
        created_at:
          type: string
          format: date-time
          description: The date and time the email was created.
          example: '2023-04-03T22:13:42.674981+00:00'
        subject:
          type: string
          description: The subject line of the email.
          example: 'Hello World'
        html:
          type: string
          description: The HTML body of the email.
          example: 'Congrats on sending your <strong>first email</strong>!'
        text:
          type: string
          description: The plain text body of the email.
        bcc:
          type: array
          items:
            type: string
          description: The email addresses of the blind carbon copy recipients.
        cc:
          type: array
          items:
            type: string
          description: The email addresses of the carbon copy recipients.
        reply_to:
          type: array
          items:
            type: string
          description: The email addresses to which replies should be sent.
        last_event:
          type: string
          description: The status of the email.
          example: 'delivered'
    ListEmailsResponse:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: 'list'
        has_more:
          type: boolean
          description: Indicates if there are more results available.
          example: false
        data:
          type: array
          description: Array containing email information.
          items:
            $ref: '#/components/schemas/Email'
    CreateBatchEmailsResponse:
      type: object
      properties:
        data:
          type: array
          items:
            type: object
            properties:
              id:
                type: string
                description: The ID of the sent email.
    DomainCapabilities:
      type: object
      description: Configure the domain capabilities for sending and receiving emails. At least one capability must be enabled.
      properties:
        sending:
          type: string
          enum:
            - enabled
            - disabled
          description: Enable or disable sending emails from this domain.
        receiving:
          type: string
          enum:
            - enabled
            - disabled
          description: Enable or disable receiving emails to this domain.
    CreateDomainRequest:
      type: object
      required:
        - name
      properties:
        name:
          type: string
          description: The name of the domain you want to create.
        region:
          type: string
          enum:
            - us-east-1
            - eu-west-1
            - sa-east-1
            - ap-northeast-1
          default: us-east-1
          description: The region where emails will be sent from. Possible values are us-east-1 | eu-west-1 | sa-east-1 | ap-northeast-1
        custom_return_path:
          type: string
          description: For advanced use cases, choose a subdomain for the Return-Path address. Defaults to 'send' (i.e., send.yourdomain.tld).
        open_tracking:
          type: boolean
          description: Track the open rate of each email.
        click_tracking:
          type: boolean
          description: Track clicks within the body of each HTML email.
        tls:
          type: string
          enum:
            - opportunistic
            - enforced
          default: opportunistic
          description: TLS mode. Opportunistic attempts secure connection but falls back to unencrypted. Enforced requires TLS or email won't be sent.
        capabilities:
          $ref: '#/components/schemas/DomainCapabilities'
        tracking_subdomain:
          type: string
          description: The subdomain to use for click and open tracking.
    CreateDomainResponse:
      type: object
      properties:
        id:
          type: string
          description: The ID of the domain.
        name:
          type: string
          description: The name of the domain.
        created_at:
          type: string
          format: date-time
          description: The date and time the domain was created.
        status:
          type: string
          description: The status of the domain.
        capabilities:
          $ref: '#/components/schemas/DomainCapabilities'
        records:
          type: array
          items:
            $ref: '#/components/schemas/DomainRecord'
        region:
          type: string
          description: The region where the domain is hosted.
        open_tracking:
          type: boolean
          description: Whether open tracking is enabled for this domain.
        click_tracking:
          type: boolean
          description: Whether click tracking is enabled for this domain.
        tracking_subdomain:
          type: string
          description: The subdomain used for click and open tracking.
    UpdateDomainOptions:
      type: object
      properties:
        open_tracking:
          type: boolean
          description: Track the open rate of each email.
        click_tracking:
          type: boolean
          description: Track clicks within the body of each HTML email.
        tls:
          type: string
          description: enforced | opportunistic.
          default: "opportunistic"
        capabilities:
          $ref: '#/components/schemas/DomainCapabilities'
        tracking_subdomain:
          type: string
          description: The subdomain to use for click and open tracking.
    DomainRecord:
      type: object
      properties:
        record:
          type: string
          enum:
            - SPF
            - DKIM
            - Receiving
            - Tracking
          description: The type of record (SPF for sending, DKIM for sending, Receiving for inbound emails, Tracking for click and open tracking).
        name:
          type: string
          description: The name of the DNS record.
        type:
          type: string
          enum:
            - MX
            - TXT
            - CNAME
          description: The DNS record type.
        ttl:
          type: string
          description: The time to live for the record.
        status:
          type: string
          enum:
            - pending
            - verified
            - failed
            - temporary_failure
            - not_started
          description: The status of the record.
        value:
          type: string
          description: The value of the record.
        priority:
          type: integer
          description: The priority of the record (only applicable for MX records).
    Domain:
      type: object
      properties:
        object:
          type: string
          description: The type of object.
          example: 'domain'
        id:
          type: string
          description: The ID of the domain.
          example: 'd91cd9bd-1176-453e-8fc1-35364d380206'
        name:
          type: string
          description: The name of the domain.
          example: 'example.com'
        status:
          type: string
          description: The status of the domain.
          example: 'not_started'
        created_at:
          type: string
          format: date-time
          description: The date and time the domain was created.
          example: '2023-04-26T20:21:26.347412+00:00'
        region:
          type: string
          description: The region where the domain is hosted.
          example: 'us-east-1'
        open_tracking:
          type: boolean
          description: Whether open tracking is enabled for this domain.
        click_tracking:
          type: boolean
          description: Whether click tracking is enabled for this domain.
        tracking_subdomain:
          type: string
          description: The subdomain used for click and open tracking.
        capabilities:
          $ref: '#/components/schemas/DomainCapabilities'
        records:
          type: array
          items:
            $ref: '#/components/schemas/DomainRecord'
    VerifyDomainResponse:
      type: object
      properties:
        object:
          type: string
          description: The type of object.
          example: 'domain'
        id:
          type: string
          description: The ID of the domain.
          example: 'd91cd9bd-1176-453e-8fc1-35364d380206'
    ListDomainsResponse:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: 'list'
        has_more:
          type: boolean
          description: Indicates if there are more results available.
          example: false
        data:
          type: array
          items:
            $ref: '#/components/schemas/ListDomainsItem'
    ListDomainsItem:
      type: object
      properties:
        id:
          type: string
          description: The ID of the domain.
          example: 'd91cd9bd-1176-453e-8fc1-35364d380206'
        name:
          type: string
          description: The name of the domain.
          example: 'example.com'
        status:
          type: string
          description: The status of the domain.
          example: 'not_started'
        created_at:
          type: string
          format: date-time
          description: The date and time the domain was created.
          example: '2023-04-26T20:21:26.347412+00:00'
        region:
          type: string
          description: The region where the domain is hosted.
          example: 'us-east-1'
        capabilities:
          $ref: '#/components/schemas/DomainCapabilities'
    UpdateDomainResponseSuccess:
      type: object
      properties:
        id:
          type: string
          description: The ID of the updated domain.
          example: 'd91cd9bd-1176-453e-8fc1-35364d380206'
        object:
          type: string
          description: The object type representing the updated domain.
          example: 'domain'
    DeleteDomainResponse:
      type: object
      properties:
        object:
          type: string
          description: The type of object.
          example: 'domain'
        id:
          type: string
          description: The ID of the domain.
          example: 'd91cd9bd-1176-453e-8fc1-35364d380206'
        deleted:
          type: boolean
          description: Indicates whether the domain was deleted successfully.
          example: true
    CreateApiKeyRequest:
      type: object
      required:
        - name
      properties:
        name:
          type: string
          description: The API key name.
        permission:
          type: string
          enum:
            - full_access
            - sending_access
          description: The API key can have full access to Resend’s API or be only restricted to send emails. * full_access - Can create, delete, get, and update any resource. * sending_access - Can only send emails.
        domain_id:
          type: string
          description: Restrict an API key to send emails only from a specific domain. Only used when the permission is sending_access.
    CreateApiKeyResponse:
      type: object
      properties:
        id:
          type: string
          description: The ID of the API key.
        token:
          type: string
          description: The token of the API key.
    ListApiKeysResponse:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: 'list'
        has_more:
          type: boolean
          description: Indicates if there are more results available.
          example: false
        data:
          type: array
          items:
            $ref: '#/components/schemas/ApiKey'
    ApiKey:
      type: object
      properties:
        id:
          type: string
          description: The ID of the API key.
        name:
          type: string
          description: The name of the API key.
        created_at:
          type: string
          format: date-time
          description: The date and time the API key was created.
        last_used_at:
          type: string
          format: date-time
          nullable: true
          description: The date and time the API key was last used.
    DeleteApiKeyResponse:
      type: object
      properties:
        object:
          type: string
          description: The type of object.
          example: 'api_key'
        id:
          type: string
          description: The ID of the API key.
        deleted:
          type: boolean
          description: Indicates whether the API key was successfully deleted.
          example: true
    CreateAudienceOptions:
      type: object
      deprecated: true
      required:
        - name
      properties:
        name:
          type: string
          description: The name of the audience you want to create.
    CreateAudienceResponseSuccess:
      type: object
      deprecated: true
      properties:
        id:
          type: string
          description: The ID of the audience.
          example: 78261eea-8f8b-4381-83c6-79fa7120f1cf
        object:
          type: string
          description: The object of the audience.
          example: audience
        name:
          type: string
          description: The name of the audience.
          example: Registered Users
    GetAudienceResponseSuccess:
      type: object
      deprecated: true
      properties:
        id:
          type: string
          description: The ID of the audience.
          example: 78261eea-8f8b-4381-83c6-79fa7120f1cf
        object:
          type: string
          description: The object of the audience.
          example: audience
        name:
          type: string
          description: The name of the audience.
          example: Registered Users
        created_at:
          type: string
          description: The date that the object was created.
          example: 2023-10-06T22:59:55.977Z
    RemoveAudienceResponseSuccess:
      type: object
      deprecated: true
      properties:
        id:
          type: string
          description: The ID of the audience.
          example: 78261eea-8f8b-4381-83c6-79fa7120f1cf
        object:
          type: string
          description: The object of the audience.
          example: audience
        deleted:
          type: boolean
          description: The deleted attribute indicates that the corresponding audience has been deleted.
          example: true
    ListAudiencesResponseSuccess:
      type: object
      deprecated: true
      properties:
        object:
          type: string
          description: Type of the response object.
          example: list
        data:
          type: array
          description: Array containing audience information.
          items:
            type: object
            properties:
              id:
                type: string
                description: Unique identifier for the audience.
                example: 78261eea-8f8b-4381-83c6-79fa7120f1cf
              name:
                type: string
                description: Name of the audience.
                example: Registered Users
              created_at:
                type: string
                format: date-time
                description: Timestamp indicating when the audience was created.
                example: "2023-10-06T22:59:55.977Z"
    CreateContactOptions:
      type: object
      required:
        - email
      properties:
        email:
          type: string
          description: Email address of the contact.
          example: steve.wozniak@gmail.com
        first_name:
          type: string
          description: First name of the contact.
          example: Steve
        last_name:
          type: string
          description: Last name of the contact.
          example: Wozniak
        unsubscribed:
          type: boolean
          description: The Contact's global subscription status. If set to true, the contact will be unsubscribed from all Broadcasts.
          example: false
        properties:
          type: object
          additionalProperties: true
          description: A map of custom property keys and values to create.
        segments:
          type: array
          items:
            type: string
          description: Array of segment IDs to add the contact to.
        topics:
          type: array
          items:
            type: object
            properties:
              id:
                type: string
                description: The topic ID.
              subscription:
                type: string
                enum:
                  - opt_in
                  - opt_out
                description: The subscription status for this topic.
          description: Array of topic subscriptions for the contact.
        audience_id:
          type: string
          description: Unique identifier of the audience to which the contact belongs.
          example: 78261eea-8f8b-4381-83c6-79fa7120f1cf
          deprecated: true
    CreateContactResponseSuccess:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: contact
        id:
          type: string
          description: Unique identifier for the created contact.
          example: 479e3145-dd38-476b-932c-529ceb705947
    GetContactResponseSuccess:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: contact
        id:
          type: string
          description: Unique identifier for the contact.
          example: e169aa45-1ecf-4183-9955-b1499d5701d3
        email:
          type: string
          description: Email address of the contact.
          example: steve.wozniak@gmail.com
        first_name:
          type: string
          description: First name of the contact.
          example: Steve
        last_name:
          type: string
          description: Last name of the contact.
          example: Wozniak
        created_at:
          type: string
          format: date-time
          description: Timestamp indicating when the contact was created.
          example: "2023-10-06T23:47:56.678Z"
        unsubscribed:
          type: boolean
          description: Indicates if the contact is unsubscribed.
          example: false
        properties:
          type: object
          additionalProperties: true
          description: A map of custom property keys and values.
    UpdateContactOptions:
      type: object
      properties:
        email:
          type: string
          description: Email address of the contact.
          example: steve.wozniak@gmail.com
        first_name:
          type: string
          description: First name of the contact.
          example: Steve
        last_name:
          type: string
          description: Last name of the contact.
          example: Wozniak
        unsubscribed:
          type: boolean
          description: The Contact's global subscription status. If set to true, the contact will be unsubscribed from all Broadcasts.
          example: false
        properties:
          type: object
          additionalProperties: true
          description: A map of custom property keys and values to update.
    UpdateContactResponseSuccess:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: contact
        id:
          type: string
          description: Unique identifier for the updated contact.
          example: 479e3145-dd38-476b-932c-529ceb705947
    RemoveContactResponseSuccess:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: contact
        id:
          type: string
          description: Unique identifier for the removed contact.
          example: 520784e2-887d-4c25-b53c-4ad46ad38100
        deleted:
          type: boolean
          description: Indicates whether the contact was successfully deleted.
          example: true
    ListContactsResponseSuccess:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: list
        data:
          type: array
          description: Array containing contact information.
          items:
            type: object
            properties:
              id:
                type: string
                description: Unique identifier for the contact.
                example: e169aa45-1ecf-4183-9955-b1499d5701d3
              email:
                type: string
                description: Email address of the contact.
                example: steve.wozniak@gmail.com
              first_name:
                type: string
                description: First name of the contact.
                example: Steve
              last_name:
                type: string
                description: Last name of the contact.
                example: Wozniak
              created_at:
                type: string
                format: date-time
                description: Timestamp indicating when the contact was created.
                example: "2023-10-06T23:47:56.678Z"
              unsubscribed:
                type: boolean
                description: Indicates if the contact is unsubscribed.
                example: false
    CreateBroadcastOptions:
      type: object
      required:
        - from
        - subject
        - segment_id
      properties:
        name:
          type: string
          description: Name of the broadcast.
        segment_id:
          type: string
          description: Unique identifier of the segment this broadcast will be sent to.
        audience_id:
          type: string
          description: Use `segment_id` instead. Unique identifier of the segment this broadcast will be sent to.
          deprecated: true
        from:
          type: string
          description: The email address of the sender.
        subject:
          type: string
          description: The subject line of the email.
        reply_to:
          type: array
          items:
            type: string
          description: The email addresses to which replies should be sent.
        preview_text:
          type: string
          description: The preview text of the email.
          example: 'Here are our announcements'
        html:
          type: string
          description: The HTML version of the message.
        text:
          type: string
          description: The plain text version of the message.
        topic_id:
          type: string
          description: The topic ID that the broadcast will be scoped to.
        send:
          type: boolean
          description: |
            Whether to send the broadcast immediately or keep it as a draft.
        scheduled_at:
          type: string
          description: |
            Schedule time to send the broadcast. Can only be used if `send` is true.
    CreateBroadcastResponseSuccess:
      type: object
      properties:
        id:
          type: string
          description: The ID of the broadcast.
          example: 78261eea-8f8b-4381-83c6-79fa7120f1cf
        object:
          type: string
          description: The object type of the response.
          example: broadcast
    ListBroadcastsResponseSuccess:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: list
        has_more:
          type: boolean
          description: Indicates if there are more results available.
          example: false
        data:
          type: array
          description: Array containing broadcast information.
          items:
            type: object
            properties:
              id:
                type: string
                description: Unique identifier for the broadcast.
                example: e169aa45-1ecf-4183-9955-b1499d5701d3
              name:
                type: string
                description: Name of the broadcast.
                example: November announcements
              audience_id:
                type: string
                description: Deprecated. Use segment_id instead.
                example: 78261eea-8f8b-4381-83c6-79fa7120f1cf
                deprecated: true
              segment_id:
                type: string
                description: Unique identifier of the segment this broadcast will be sent to.
                example: 78261eea-8f8b-4381-83c6-79fa7120f1cf
              status:
                type: string
                description: The status of the broadcast.
                example: 'draft'
              created_at:
                type: string
                format: date-time
                description: Timestamp indicating when the broadcast was created.
                example: "2023-10-06T22:59:55.977Z"
              scheduled_at:
                type: string
                format: date-time
                description: Timestamp indicating when the broadcast is scheduled to be sent.
                example: "2023-10-06T22:59:55.977Z"
              sent_at:
                type: string
                format: date-time
                description: Timestamp indicating when the broadcast was sent.
                example: "2023-10-06T22:59:55.977Z"
              topic_id:
                type: string
                description: The topic ID that the broadcast is scoped to.
                example: b6d24b8e-af0b-4c3c-be0c-359bbd97381e
    GetBroadcastResponseSuccess:
      type: object
      properties:
        id:
          type: string
          description: Unique identifier for the broadcast.
          example: e169aa45-1ecf-4183-9955-b1499d5701d3
        name:
          type: string
          description: Name of the broadcast.
          example: November announcements
        audience_id:
          type: string
          nullable: true
          description: "Deprecated: use `segment_id` instead. Unique identifier of the segment this broadcast will be sent to."
          deprecated: true
        segment_id:
          type: string
          nullable: true
          description: Unique identifier of the segment this broadcast will be sent to.
        from:
          type: string
          description: The email address of the sender.
          example: 'Acme <onboarding@resend.dev>'
        subject:
          type: string
          description: The subject line of the email.
          example: 'Hello World'
        reply_to:
          type: array
          items:
            type: string
          description: The email addresses to which replies should be sent.
        preview_text:
          type: string
          description: The preview text of the email.
          example: 'Here are our announcements'
        status:
          type: string
          description: The status of the broadcast.
          example: 'draft'
        created_at:
          type: string
          format: date-time
          description: Timestamp indicating when the broadcast was created.
          example: "2023-10-06T22:59:55.977Z"
        scheduled_at:
          type: string
          format: date-time
          description: Timestamp indicating when the broadcast is scheduled to be sent.
          example: "2023-10-06T22:59:55.977Z"
        sent_at:
          type: string
          format: date-time
          description: Timestamp indicating when the broadcast was sent.
          example: "2023-10-06T22:59:55.977Z"
        text:
          type: string
          nullable: true
          description: The plain text version of the broadcast content.
          example: 'Hello {{{FIRST_NAME|there}}}!'
        html:
          type: string
          nullable: true
          description: The HTML version of the broadcast content.
          example: '<p>Hello {{{FIRST_NAME|there}}}!</p>'
        topic_id:
          type: string
          nullable: true
          description: The topic ID that the broadcast is scoped to.
          example: b6d24b8e-af0b-4c3c-be0c-359bbd97381e
    UpdateBroadcastOptions:
      type: object
      properties:
        name:
          type: string
          description: Name of the broadcast.
        audience_id:
          type: string
          description: Use `segment_id` instead. Unique identifier of the audience this broadcast will be sent to.
          deprecated: true
        segment_id:
          type: string
          description: Unique identifier of the segment this broadcast will be sent to.
        from:
          type: string
          description: The email address of the sender.
        subject:
          type: string
          description: The subject line of the email.
        reply_to:
          type: array
          items:
            type: string
          description: The email addresses to which replies should be sent.
        preview_text:
          type: string
          description: The preview text of the email.
        html:
          type: string
          description: The HTML version of the message.
        text:
          type: string
          description: The plain text version of the message.
        topic_id:
          type: string
          description: The topic ID that the broadcast will be scoped to.
    UpdateBroadcastResponseSuccess:
      type: object
      properties:
        id:
          type: string
          description: The ID of the broadcast.
          example: 78261eea-8f8b-4381-83c6-79fa7120f1cf
        object:
          type: string
          description: The object type of the response.
          example: broadcast
    RemoveBroadcastResponseSuccess:
      type: object
      properties:
        id:
          type: string
          description: The ID of the broadcast.
          example: 78261eea-8f8b-4381-83c6-79fa7120f1cf
        object:
          type: string
          description: Type of the response object.
          example: broadcast
        deleted:
          type: boolean
          description: The deleted attribute indicates that the corresponding broadcast has been deleted.
          example: true
    SendBroadcastOptions:
      type: object
      properties:
        scheduled_at:
          type: string
          description: Schedule email to be sent later. The date should be in ISO 8601 format.
    SendBroadcastResponseSuccess:
      type: object
      properties:
        id:
          type: string
          description: The ID of the broadcast.
          example: 78261eea-8f8b-4381-83c6-79fa7120f1cf
    RetrievedAttachment:
      type: object
      properties:
        object:
          type: string
          description: The type of object.
          example: 'attachment'
        id:
          type: string
          format: uuid
          description: The ID of the attachment.
          example: '660e8400-e29b-41d4-a716-446655440000'
        filename:
          type: string
          description: The filename of the attachment.
          example: 'document.pdf'
        content_type:
          type: string
          description: The MIME type of the attachment.
          example: 'application/pdf'
        content_id:
          type: string
          description: The content ID for inline attachments.
          example: 'img001'
        content_disposition:
          type: string
          enum:
            - inline
            - attachment
          description: How the attachment should be displayed.
          example: 'attachment'
        download_url:
          type: string
          description: Signed URL to download the attachment content.
          example: 'https://cloudfront.example.com/path?Signature=...'
        expires_at:
          type: string
          format: date-time
          description: Timestamp when the download URL expires.
          example: '2024-10-27T18:30:00.000Z'
        size:
          type: integer
          description: Size of the attachment in bytes.
          example: 2048
    ListAttachmentsResponse:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: 'list'
        has_more:
          type: boolean
          description: Indicates if there are more results available.
          example: false
        data:
          type: array
          description: Array containing attachment information.
          items:
            type: object
            properties:
              id:
                type: string
                format: uuid
                description: The ID of the attachment.
                example: '660e8400-e29b-41d4-a716-446655440000'
              filename:
                type: string
                description: The filename of the attachment.
                example: 'document.pdf'
              content_type:
                type: string
                description: The MIME type of the attachment.
                example: 'application/pdf'
              content_id:
                type: string
                description: The content ID for inline attachments.
                example: 'img001'
              content_disposition:
                type: string
                enum:
                  - inline
                  - attachment
                description: How the attachment should be displayed.
                example: 'attachment'
              download_url:
                type: string
                description: Signed URL to download the attachment content.
                example: 'https://cloudfront.example.com/path?Signature=...'
              expires_at:
                type: string
                format: date-time
                description: Timestamp when the download URL expires.
                example: '2024-10-27T18:30:00.000Z'
              size:
                type: integer
                description: Size of the attachment in bytes.
                example: 2048
    GetReceivedEmailResponse:
      type: object
      properties:
        object:
          type: string
          description: The type of object.
          example: 'email'
        id:
          type: string
          format: uuid
          description: The ID of the received email.
          example: '550e8400-e29b-41d4-a716-446655440000'
        to:
          type: array
          items:
            type: string
          description: The recipient email addresses.
          example: ['delivered@resend.dev']
        from:
          type: string
          description: The sender email address.
          example: 'sender@example.com'
        subject:
          type: string
          description: The email subject.
          example: 'Hello World'
        message_id:
          type: string
          description: The unique message ID from the email headers.
          example: '<message-id@example.com>'
        bcc:
          type: array
          items:
            type: string
          nullable: true
          description: The BCC recipients.
          example: []
        cc:
          type: array
          items:
            type: string
          nullable: true
          description: The CC recipients.
          example: []
        reply_to:
          type: array
          items:
            type: string
          nullable: true
          description: The reply-to addresses.
          example: []
        html:
          type: string
          nullable: true
          description: The HTML content of the email.
          example: '<p>Email content</p>'
        text:
          type: string
          nullable: true
          description: The plain text content of the email.
          example: 'Email content'
        headers:
          type: object
          nullable: true
          description: The email headers.
          example: {'X-Custom-Header': 'value'}
        created_at:
          type: string
          format: date-time
          description: Timestamp when the email was received.
          example: '2023-10-06:23:47:56.678Z'
        attachments:
          type: array
          description: Array of attachments.
          items:
            type: object
            properties:
              id:
                type: string
                format: uuid
                description: The ID of the attachment.
              filename:
                type: string
                description: The filename of the attachment.
              content_type:
                type: string
                description: The MIME type of the attachment.
              content_id:
                type: string
                description: The content ID for inline attachments.
              content_disposition:
                type: string
                enum:
                  - inline
                  - attachment
                description: How the attachment should be displayed.
              size:
                type: integer
                description: Size of the attachment in bytes.
    ListReceivedEmailsResponse:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: 'list'
        has_more:
          type: boolean
          description: Indicates if there are more results available.
          example: false
        data:
          type: array
          description: Array containing received email information.
          items:
            type: object
            properties:
              id:
                type: string
                format: uuid
                description: The ID of the received email.
                example: '550e8400-e29b-41d4-a716-446655440000'
              to:
                type: array
                items:
                  type: string
                description: The recipient email addresses.
                example: ['delivered@resend.dev']
              from:
                type: string
                description: The sender email address.
                example: 'sender@example.com'
              subject:
                type: string
                nullable: true
                description: The email subject.
                example: 'Hello World'
              message_id:
                type: string
                description: The unique message ID from the email headers.
                example: '<message-id@example.com>'
              bcc:
                type: array
                items:
                  type: string
                nullable: true
                description: The BCC recipients.
              cc:
                type: array
                items:
                  type: string
                nullable: true
                description: The CC recipients.
              reply_to:
                type: array
                items:
                  type: string
                nullable: true
                description: The reply-to addresses.
              created_at:
                type: string
                format: date-time
                description: Timestamp when the email was received.
                example: '2023-10-06T23:47:56.678Z'
              attachments:
                type: array
                description: Array of attachments for this email.
                items:
                  type: object
                  properties:
                    id:
                      type: string
                      format: uuid
                      description: The ID of the attachment.
                    filename:
                      type: string
                      description: The filename of the attachment.
                    content_type:
                      type: string
                      description: The MIME type of the attachment.
                    content_id:
                      type: string
                      description: The content ID for inline attachments.
                    content_disposition:
                      type: string
                      enum:
                        - inline
                        - attachment
                      description: How the attachment should be displayed.
                    size:
                      type: integer
                      description: Size of the attachment in bytes.
    CreateWebhookRequest:
      type: object
      required:
        - endpoint
        - events
      properties:
        endpoint:
          type: string
          description: The URL where webhook events will be sent.
          example: 'https://webhook.example.com/handler'
        events:
          type: array
          items:
            type: string
          minItems: 1
          description: Array of event types to subscribe to.
          example: ['email.sent', 'email.delivered', 'email.bounced']
    CreateWebhookResponse:
      type: object
      properties:
        object:
          type: string
          description: The type of object.
          example: 'webhook'
        id:
          type: string
          format: uuid
          description: The ID of the webhook.
          example: '479e3145-dd38-476b-932c-529ceb705947'
        signing_secret:
          type: string
          description: The secret key used to verify webhook payloads.
          example: 'whsec_...'
    GetWebhookResponse:
      type: object
      properties:
        object:
          type: string
          description: The type of object.
          example: 'webhook'
        id:
          type: string
          format: uuid
          description: The ID of the webhook.
          example: '479e3145-dd38-476b-932c-529ceb705947'
        endpoint:
          type: string
          description: The URL where webhook events are sent.
          example: 'https://webhook.example.com/handler'
        events:
          type: array
          items:
            type: string
          nullable: true
          description: Array of event types subscribed to.
          example: ['email.sent', 'email.delivered']
        status:
          type: string
          description: The status of the webhook.
          example: 'enabled'
        created_at:
          type: string
          format: date-time
          description: Timestamp indicating when the webhook was created.
          example: '2023-10-06T23:47:56.678Z'
        signing_secret:
          type: string
          description: The secret key used to verify webhook payloads.
          example: 'whsec_...'
    ListWebhooksResponse:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: 'list'
        has_more:
          type: boolean
          description: Indicates if there are more results available.
          example: false
        data:
          type: array
          description: Array containing webhook information.
          items:
            type: object
            properties:
              id:
                type: string
                format: uuid
                description: The ID of the webhook.
                example: '479e3145-dd38-476b-932c-529ceb705947'
              endpoint:
                type: string
                description: The URL where webhook events are sent.
                example: 'https://webhook.example.com/handler'
              events:
                type: array
                items:
                  type: string
                nullable: true
                description: Array of event types subscribed to.
                example: ['email.sent']
              status:
                type: string
                description: The status of the webhook.
                example: 'enabled'
              created_at:
                type: string
                format: date-time
                description: Timestamp indicating when the webhook was created.
                example: '2023-10-06T23:47:56.678Z'
    UpdateWebhookRequest:
      type: object
      properties:
        endpoint:
          type: string
          description: The URL where webhook events will be sent.
          example: 'https://webhook.example.com/new-handler'
        events:
          type: array
          items:
            type: string
          minItems: 1
          description: Array of event types to subscribe to.
          example: ['email.sent', 'email.delivered']
        status:
          type: string
          enum:
            - enabled
            - disabled
          description: The status of the webhook.
          example: 'enabled'
    UpdateWebhookResponse:
      type: object
      properties:
        object:
          type: string
          description: The type of object.
          example: 'webhook'
        id:
          type: string
          format: uuid
          description: The ID of the updated webhook.
          example: '479e3145-dd38-476b-932c-529ceb705947'
    DeleteWebhookResponse:
      type: object
      properties:
        object:
          type: string
          description: The type of object.
          example: 'webhook'
        id:
          type: string
          format: uuid
          description: The ID of the deleted webhook.
          example: '479e3145-dd38-476b-932c-529ceb705947'
        deleted:
          type: boolean
          description: Indicates whether the webhook was successfully deleted.
          example: true
    TemplateVariable:
      type: object
      properties:
        id:
          type: string
          description: The ID of the template variable.
        key:
          type: string
          description: The key of the variable.
        type:
          type: string
          description: The type of the variable.
          enum: [string, number, boolean, object, list]
        fallback_value:
          description: The fallback value of the variable.
          oneOf:
            - type: string
            - type: number
            - type: boolean
            - type: object
            - type: array
              items: {}
        created_at:
          type: string
          format: date-time
          description: Timestamp indicating when the variable was created.
        updated_at:
          type: string
          format: date-time
          description: Timestamp indicating when the variable was last updated.
      required:
        - key
        - type
    TemplateVariableInput:
      type: object
      properties:
        key:
          type: string
          description: The key of the variable.
        type:
          type: string
          description: The type of the variable.
          enum: [string, number, boolean, object, list]
        fallback_value:
          description: The fallback value of the variable.
          oneOf:
            - type: string
            - type: number
            - type: boolean
            - type: object
            - type: array
              items: {}
      required:
        - key
        - type
    Template:
      type: object
      properties:
        object:
          type: string
          description: The type of object.
          example: template
        id:
          type: string
          description: The ID of the template.
        current_version_id:
          type: string
          description: The ID of the current version of the template.
        name:
          type: string
          description: The name of the template.
        alias:
          type: string
          description: The alias of the template.
        from:
          type: string
          description: Sender email address. To include a friendly name, use the format "Your Name <sender@domain.com>".
        subject:
          type: string
          description: Email subject.
        reply_to:
          type: array
          items:
            type: string
          nullable: true
          description: Reply-to email addresses.
        html:
          type: string
          description: The HTML version of the template.
        text:
          type: string
          description: The plain text version of the template.
        variables:
          type: array
          items:
            $ref: '#/components/schemas/TemplateVariable'
        created_at:
          type: string
          format: date-time
          description: Timestamp indicating when the template was created.
        updated_at:
          type: string
          format: date-time
          description: Timestamp indicating when the template was last updated.
        status:
          type: string
          description: The publication status of the template.
          enum: [draft, published]
        published_at:
          type: string
          format: date-time
          description: Timestamp indicating when the template was published.
          nullable: true
        has_unpublished_versions:
          type: boolean
          description: Indicates whether the template has unpublished versions.
    TemplateListItem:
      type: object
      properties:
        id:
          type: string
          description: The ID of the template.
        name:
          type: string
          description: The name of the template.
        status:
          type: string
          description: The publication status of the template.
          enum: [draft, published]
        published_at:
          type: string
          format: date-time
          nullable: true
          description: Timestamp indicating when the template was published.
        created_at:
          type: string
          format: date-time
          description: Timestamp indicating when the template was created.
        updated_at:
          type: string
          format: date-time
          description: Timestamp indicating when the template was last updated.
        alias:
          type: string
          description: The alias of the template.
    CreateTemplateRequest:
      type: object
      required:
        - name
        - html
      properties:
        name:
          type: string
          description: The name of the template.
        alias:
          type: string
          description: The alias of the template.
        from:
          type: string
          description: Sender email address. To include a friendly name, use the format "Your Name <sender@domain.com>".
        subject:
          type: string
          description: Email subject.
        reply_to:
          type: array
          items:
            type: string
          description: Reply-to email addresses.
        html:
          type: string
          description: The HTML version of the template.
        text:
          type: string
          description: The plain text version of the template.
        variables:
          type: array
          items:
            $ref: '#/components/schemas/TemplateVariableInput'
    CreateTemplateResponseSuccess:
      type: object
      properties:
        id:
          type: string
          description: The ID of the template.
        object:
          type: string
          description: The object type of the response.
          example: template
    ListTemplatesResponseSuccess:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: list
        data:
          type: array
          description: Array containing templates information.
          items:
            $ref: '#/components/schemas/TemplateListItem'
        has_more:
          type: boolean
          description: Indicates if there are more templates to retrieve.
    UpdateTemplateOptions:
      type: object
      properties:
        name:
          type: string
          description: The name of the template.
        alias:
          type: string
          description: The alias of the template.
        from:
          type: string
          description: Sender email address. To include a friendly name, use the format "Your Name <sender@domain.com>".
        subject:
          type: string
          description: Email subject.
        reply_to:
          type: array
          items:
            type: string
          description: Reply-to email addresses.
        html:
          type: string
          description: The HTML version of the template.
        text:
          type: string
          description: The plain text version of the template.
        variables:
          type: array
          items:
            $ref: '#/components/schemas/TemplateVariableInput'
    UpdateTemplateResponseSuccess:
      type: object
      properties:
        id:
          type: string
          description: The ID of the template.
        object:
          type: string
          description: The object type of the response.
          example: template
    RemoveTemplateResponseSuccess:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: template
        id:
          type: string
          description: The ID of the template.
        deleted:
          type: boolean
          description: Indicates whether the template was successfully deleted.
          example: true
    PublishTemplateResponseSuccess:
      type: object
      properties:
        id:
          type: string
          description: The ID of the template.
        object:
          type: string
          description: The object type of the response.
          example: template
    DuplicateTemplateResponseSuccess:
      type: object
      properties:
        id:
          type: string
          description: The ID of the duplicated template.
        object:
          type: string
          description: The object type of the response.
          example: template
    CreateSegmentOptions:
      type: object
      required:
        - name
      properties:
        name:
          type: string
          description: The name of the segment.
        audience_id:
          type: string
          description: The ID of the audience this segment belongs to.
          deprecated: true
        filter:
          type: object
          description: Filter conditions for the segment.
    CreateSegmentResponseSuccess:
      type: object
      properties:
        id:
          type: string
          description: The ID of the segment.
          example: 78261eea-8f8b-4381-83c6-79fa7120f1cf
        object:
          type: string
          description: The object type of the response.
          example: segment
    GetSegmentResponseSuccess:
      type: object
      properties:
        id:
          type: string
          description: The ID of the segment.
          example: 78261eea-8f8b-4381-83c6-79fa7120f1cf
        object:
          type: string
          description: The object type.
          example: segment
        name:
          type: string
          description: The name of the segment.
          example: Active Users
        audience_id:
          type: string
          description: The ID of the audience this segment belongs to.
          deprecated: true
        filter:
          type: object
          description: Filter conditions for the segment.
        created_at:
          type: string
          format: date-time
          description: Timestamp indicating when the segment was created.
    ListSegmentsResponseSuccess:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: list
        has_more:
          type: boolean
          description: Indicates if there are more results available.
        data:
          type: array
          description: Array containing segment information.
          items:
            type: object
            properties:
              id:
                type: string
                description: Unique identifier for the segment.
              name:
                type: string
                description: Name of the segment.
              audience_id:
                type: string
                description: The ID of the audience this segment belongs to.
                deprecated: true
              created_at:
                type: string
                format: date-time
                description: Timestamp indicating when the segment was created.
    RemoveSegmentResponseSuccess:
      type: object
      properties:
        id:
          type: string
          description: The ID of the segment.
          example: 78261eea-8f8b-4381-83c6-79fa7120f1cf
        object:
          type: string
          description: The object type.
          example: segment
        deleted:
          type: boolean
          description: Indicates whether the segment was successfully deleted.
          example: true
    CreateTopicOptions:
      type: object
      required:
        - name
        - default_subscription
      properties:
        name:
          type: string
          description: The name of the topic. Max 50 characters.
          maxLength: 50
        default_subscription:
          type: string
          enum:
            - opt_in
            - opt_out
          description: The default subscription status for the topic. Cannot be changed after creation.
        description:
          type: string
          description: A description of the topic. Max 200 characters.
          maxLength: 200
        visibility:
          type: string
          enum:
            - public
            - private
          default: private
          description: The visibility of the topic. Public topics are visible to all contacts on the unsubscribe page. Private topics are only visible to opted-in contacts.
    CreateTopicResponseSuccess:
      type: object
      properties:
        id:
          type: string
          description: The ID of the topic.
          example: 78261eea-8f8b-4381-83c6-79fa7120f1cf
        object:
          type: string
          description: The object type of the response.
          example: topic
    GetTopicResponseSuccess:
      type: object
      properties:
        id:
          type: string
          description: The ID of the topic.
          example: 78261eea-8f8b-4381-83c6-79fa7120f1cf
        object:
          type: string
          description: The object type.
          example: topic
        name:
          type: string
          description: The name of the topic.
          example: Newsletter
        description:
          type: string
          description: A description of the topic.
        default_subscription:
          type: string
          enum:
            - opt_in
            - opt_out
          description: The default subscription status for the topic.
        visibility:
          type: string
          enum:
            - public
            - private
          description: The visibility of the topic.
        created_at:
          type: string
          format: date-time
          description: Timestamp indicating when the topic was created.
    ListTopicsResponseSuccess:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: list
        has_more:
          type: boolean
          description: Indicates if there are more results available.
        data:
          type: array
          description: Array containing topic information.
          items:
            type: object
            properties:
              id:
                type: string
                description: Unique identifier for the topic.
              name:
                type: string
                description: Name of the topic.
              description:
                type: string
                description: A description of the topic.
              default_subscription:
                type: string
                enum:
                  - opt_in
                  - opt_out
                description: The default subscription status for the topic.
              visibility:
                type: string
                enum:
                  - public
                  - private
                description: The visibility of the topic.
              created_at:
                type: string
                format: date-time
                description: Timestamp indicating when the topic was created.
    UpdateTopicOptions:
      type: object
      properties:
        name:
          type: string
          description: The name of the topic. Max 50 characters.
          maxLength: 50
        description:
          type: string
          description: A description of the topic. Max 200 characters.
          maxLength: 200
        visibility:
          type: string
          enum:
            - public
            - private
          description: The visibility of the topic.
    UpdateTopicResponseSuccess:
      type: object
      properties:
        id:
          type: string
          description: The ID of the topic.
          example: 78261eea-8f8b-4381-83c6-79fa7120f1cf
        object:
          type: string
          description: The object type.
          example: topic
    RemoveTopicResponseSuccess:
      type: object
      properties:
        id:
          type: string
          description: The ID of the topic.
          example: 78261eea-8f8b-4381-83c6-79fa7120f1cf
        object:
          type: string
          description: The object type.
          example: topic
        deleted:
          type: boolean
          description: Indicates whether the topic was successfully deleted.
          example: true
    CreateContactPropertyOptions:
      type: object
      required:
        - key
        - type
      properties:
        key:
          type: string
          description: The property key. Max length is 50 characters. Only alphanumeric characters and underscores are allowed.
        type:
          type: string
          enum:
            - string
            - number
          description: The property type.
        fallback_value:
          oneOf:
            - type: string
            - type: number
          description: The default value to use when the property is not set for a contact. Must match the type specified in the type field.
    CreateContactPropertyResponseSuccess:
      type: object
      properties:
        id:
          type: string
          description: The ID of the contact property.
          example: 78261eea-8f8b-4381-83c6-79fa7120f1cf
        object:
          type: string
          description: The object type of the response.
          example: contact_property
    GetContactPropertyResponseSuccess:
      type: object
      properties:
        object:
          type: string
          description: The object type.
          example: contact_property
        id:
          type: string
          description: The ID of the contact property.
          example: b6d24b8e-af0b-4c3c-be0c-359bbd97381e
        key:
          type: string
          description: The property key.
          example: company_name
        type:
          type: string
          description: The property type.
          example: string
        fallback_value:
          oneOf:
            - type: string
            - type: number
          description: The default value when the property is not set for a contact.
          example: Acme Corp
        created_at:
          type: string
          format: date-time
          description: Timestamp indicating when the contact property was created.
    ListContactPropertiesResponseSuccess:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: list
        has_more:
          type: boolean
          description: Indicates if there are more results available.
        data:
          type: array
          description: Array containing contact property information.
          items:
            type: object
            properties:
              id:
                type: string
                description: Unique identifier for the contact property.
              key:
                type: string
                description: The property key.
              type:
                type: string
                description: The property type.
              fallback_value:
                oneOf:
                  - type: string
                  - type: number
                description: The default value when the property is not set for a contact.
              created_at:
                type: string
                format: date-time
                description: Timestamp indicating when the contact property was created.
    UpdateContactPropertyOptions:
      type: object
      properties:
        fallback_value:
          oneOf:
            - type: string
            - type: number
          description: The default value to use when the property is not set for a contact. Must match the type of the property.
    UpdateContactPropertyResponseSuccess:
      type: object
      properties:
        id:
          type: string
          description: The ID of the contact property.
          example: 78261eea-8f8b-4381-83c6-79fa7120f1cf
        object:
          type: string
          description: The object type.
          example: contact_property
    RemoveContactPropertyResponseSuccess:
      type: object
      properties:
        id:
          type: string
          description: The ID of the contact property.
          example: 78261eea-8f8b-4381-83c6-79fa7120f1cf
        object:
          type: string
          description: The object type.
          example: contact_property
        deleted:
          type: boolean
          description: Indicates whether the contact property was successfully deleted.
          example: true
    AddContactToSegmentResponseSuccess:
      type: object
      properties:
        object:
          type: string
          description: The object type.
          example: contact_segment
        contact_id:
          type: string
          description: The ID of the contact.
        segment_id:
          type: string
          description: The ID of the segment.
    ListContactSegmentsResponseSuccess:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: list
        has_more:
          type: boolean
          description: Indicates if there are more results available.
        data:
          type: array
          description: Array containing segment information for this contact.
          items:
            type: object
            properties:
              id:
                type: string
                description: Unique identifier for the segment.
              name:
                type: string
                description: Name of the segment.
              created_at:
                type: string
                format: date-time
                description: Timestamp indicating when the contact was added to the segment.
    RemoveContactFromSegmentResponseSuccess:
      type: object
      properties:
        object:
          type: string
          description: The object type.
          example: contact_segment
        contact_id:
          type: string
          description: The ID of the contact.
        segment_id:
          type: string
          description: The ID of the segment.
        deleted:
          type: boolean
          description: Indicates whether the contact was successfully removed from the segment.
          example: true
    GetContactTopicsResponseSuccess:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: list
        has_more:
          type: boolean
          description: Indicates if there are more results available.
        data:
          type: array
          description: Array containing topic subscriptions for this contact.
          items:
            type: object
            properties:
              id:
                type: string
                description: Unique identifier for the topic.
              name:
                type: string
                description: Name of the topic.
              description:
                type: string
                description: Description of the topic.
              subscription:
                type: string
                enum:
                  - opt_in
                  - opt_out
                description: The subscription status for this topic.
    UpdateContactTopicsOptions:
      type: object
      required:
        - topics
      properties:
        topics:
          type: array
          items:
            type: object
            properties:
              id:
                type: string
                description: The ID of the topic.
              subscription:
                type: string
                enum:
                  - opt_in
                  - opt_out
                description: The subscription status (opt_in or opt_out).
    UpdateContactTopicsResponseSuccess:
      type: object
      properties:
        object:
          type: string
          description: The object type.
          example: contact_topics
        contact_id:
          type: string
          description: The ID of the contact.
        topics:
          type: array
          description: Array of updated topic subscriptions.
          items:
            type: object
            properties:
              id:
                type: string
                description: The ID of the topic.
              subscription:
                type: string
                enum:
                  - opt_in
                  - opt_out
                description: The subscription status.
    LogSummary:
      type: object
      properties:
        id:
          type: string
          format: uuid
          description: The log ID.
        created_at:
          type: string
          format: date-time
          description: The date the log was created.
        endpoint:
          type: string
          description: The API endpoint that was called.
        method:
          type: string
          enum:
            - GET
            - POST
            - PUT
            - DELETE
            - PATCH
            - OPTIONS
          description: The HTTP method used.
        response_status:
          type: integer
          description: The HTTP status code of the response.
        user_agent:
          type: string
          nullable: true
          description: The user agent of the request.
    Log:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: 'log'
        id:
          type: string
          format: uuid
          description: The log ID.
        created_at:
          type: string
          format: date-time
          description: The date the log was created.
        endpoint:
          type: string
          description: The API endpoint that was called.
        method:
          type: string
          enum:
            - GET
            - POST
            - PUT
            - DELETE
            - PATCH
            - OPTIONS
          description: The HTTP method used.
        response_status:
          type: integer
          description: The HTTP status code of the response.
        user_agent:
          type: string
          nullable: true
          description: The user agent of the request.
        request_body:
          nullable: true
          description: The request body sent to the API.
        response_body:
          nullable: true
          description: The response body returned by the API.
    ListLogsResponse:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: 'list'
        has_more:
          type: boolean
          description: Indicates if there are more results available.
          example: false
        data:
          type: array
          description: Array containing log information.
          items:
            $ref: '#/components/schemas/LogSummary'
    AutomationStep:
      type: object
      description: A step in an automation workflow. The `config` object varies based on the step `type`.
      required:
        - key
        - type
        - config
      properties:
        key:
          type: string
          description: A unique key for this step within the automation graph.
        type:
          type: string
          enum:
            - trigger
            - send_email
            - delay
            - wait_for_event
            - condition
            - contact_update
            - contact_delete
            - add_to_segment
          description: The type of automation step.
        config:
          type: object
          description: >
            Configuration for the step. Shape depends on `type`:
            - **trigger**: `{ event_name: string }`
            - **send_email**: `{ template: { id: string, variables?: object }, subject?: string, from?: string, reply_to?: string }`
            - **delay**: `{ duration: string }` — a human-readable duration (e.g. `"30 minutes"`)
            - **wait_for_event**: `{ event_name: string, timeout?: string, filter_rule?: object }` — `timeout` is a human-readable duration (e.g. `"1 hour"`)
            - **condition**: A rule tree with `type` (`rule`, `and`, `or`), `field`, `operator`, and `value`
            - **contact_update**: `{ first_name?: string|object, last_name?: string|object, unsubscribed?: boolean|object, properties?: object }`
            - **contact_delete**: `{}`
            - **add_to_segment**: `{ segment_id: string }`
    AutomationStepResponse:
      type: object
      description: A step as returned when retrieving an automation.
      properties:
        key:
          type: string
          description: The unique key of this step within the automation graph.
        type:
          type: string
          enum:
            - trigger
            - send_email
            - delay
            - wait_for_event
            - condition
            - contact_update
            - contact_delete
            - add_to_segment
          description: The type of automation step.
        config:
          type: object
          description: >
            Configuration for the step. Shape depends on `type`.
            For `delay` steps, config contains `{ duration: string }` with a human-readable duration (e.g. `"30 minutes"`).
            For `wait_for_event` steps, config contains `{ event_name: string, timeout?: string, filter_rule?: object }` where `timeout` is a human-readable duration.
    AutomationConnection:
      type: object
      description: A connection between two steps in the automation graph.
      required:
        - from
        - to
      properties:
        from:
          type: string
          description: The `key` of the source step.
        to:
          type: string
          description: The `key` of the target step.
        type:
          type: string
          enum:
            - default
            - condition_met
            - condition_not_met
            - timeout
            - event_received
          default: default
          description: The type of connection. Defaults to `default`.
    CreateAutomationRequest:
      type: object
      required:
        - name
        - steps
        - connections
      properties:
        name:
          type: string
          minLength: 1
          description: The name of the automation.
        status:
          type: string
          enum:
            - enabled
            - disabled
          default: disabled
          description: The initial status of the automation. Defaults to `disabled`.
        steps:
          type: array
          minItems: 1
          maxItems: 150
          description: The steps that compose the automation workflow. Must include at least one `trigger` step.
          items:
            $ref: '#/components/schemas/AutomationStep'
        connections:
          type: array
          description: The connections between steps in the automation graph.
          items:
            $ref: '#/components/schemas/AutomationConnection'
    CreateAutomationResponse:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: automation
        id:
          type: string
          description: The ID of the created automation.
    Automation:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: automation
        id:
          type: string
          description: The ID of the automation.
        name:
          type: string
          description: The name of the automation.
        status:
          type: string
          enum:
            - enabled
            - disabled
          description: The current status of the automation.
        created_at:
          type: string
          description: The date and time the automation was created.
        updated_at:
          type: string
          description: The date and time the automation was last updated.
        steps:
          type: array
          description: The steps in the active version of the automation.
          items:
            $ref: '#/components/schemas/AutomationStepResponse'
        connections:
          type: array
          description: The connections between steps in the active version of the automation.
          items:
            $ref: '#/components/schemas/AutomationConnection'
    AutomationListItem:
      type: object
      properties:
        id:
          type: string
          description: The ID of the automation.
        name:
          type: string
          description: The name of the automation.
        status:
          type: string
          enum:
            - enabled
            - disabled
          description: The current status of the automation.
        created_at:
          type: string
          description: The date and time the automation was created.
        updated_at:
          type: string
          description: The date and time the automation was last updated.
    ListAutomationsResponse:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: 'list'
        has_more:
          type: boolean
          description: Indicates if there are more results available.
        data:
          type: array
          description: Array of automations.
          items:
            $ref: '#/components/schemas/AutomationListItem'
    PatchAutomationRequest:
      type: object
      description: >
        At least one of `name`, `status`, or `steps` and `connections` must be provided.
        When updating the workflow graph, both `steps` and `connections` must be provided together.
      properties:
        name:
          type: string
          minLength: 1
          description: The name of the automation.
        status:
          type: string
          enum:
            - enabled
            - disabled
          description: The status of the automation.
        steps:
          type: array
          minItems: 1
          maxItems: 150
          description: The steps that compose the automation workflow. Must be provided together with `connections`.
          items:
            $ref: '#/components/schemas/AutomationStep'
        connections:
          type: array
          description: The connections between steps in the automation graph. Must be provided together with `steps`.
          items:
            $ref: '#/components/schemas/AutomationConnection'
    PatchAutomationResponse:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: automation
        id:
          type: string
          description: The ID of the updated automation.
    DeleteAutomationResponse:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: automation
        id:
          type: string
          description: The ID of the deleted automation.
        deleted:
          type: boolean
          description: Indicates whether the automation was successfully deleted.
          example: true
    StopAutomationResponse:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: automation
        id:
          type: string
          description: The ID of the stopped automation.
        status:
          type: string
          description: The status of the automation after stopping.
          example: disabled
    AutomationRunStep:
      type: object
      description: A step execution within an automation run.
      properties:
        key:
          type: string
          description: The key of the automation step.
        type:
          type: string
          enum:
            - trigger
            - send_email
            - delay
            - wait_for_event
            - condition
            - contact_update
            - contact_delete
            - add_to_segment
          description: The type of automation step.
        status:
          type: string
          description: The execution status of this step.
        started_at:
          type: string
          nullable: true
          description: The date and time the step started executing.
        completed_at:
          type: string
          nullable: true
          description: The date and time the step completed executing.
        output:
          nullable: true
          description: The output produced by the step, if any.
        error:
          nullable: true
          description: The error produced by the step, if any.
        created_at:
          type: string
          description: The date and time the step record was created.
    AutomationRun:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: automation_run
        id:
          type: string
          description: The ID of the automation run.
        status:
          type: string
          enum:
            - running
            - completed
            - failed
            - cancelled
          description: The current status of the automation run.
        started_at:
          type: string
          nullable: true
          description: The date and time the run started.
        completed_at:
          type: string
          nullable: true
          description: The date and time the run completed.
        created_at:
          type: string
          description: The date and time the run was created.
        steps:
          type: array
          description: The steps executed in this run, sorted in graph order.
          items:
            $ref: '#/components/schemas/AutomationRunStep'
    AutomationRunListItem:
      type: object
      properties:
        id:
          type: string
          description: The ID of the automation run.
        status:
          type: string
          enum:
            - running
            - completed
            - failed
            - cancelled
          description: The current status of the automation run.
        started_at:
          type: string
          nullable: true
          description: The date and time the run started.
        completed_at:
          type: string
          nullable: true
          description: The date and time the run completed.
        created_at:
          type: string
          description: The date and time the run was created.
    ListAutomationRunsResponse:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: 'list'
        has_more:
          type: boolean
          description: Indicates if there are more results available.
        data:
          type: array
          description: Array of automation runs.
          items:
            $ref: '#/components/schemas/AutomationRunListItem'
    Event:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: 'event'
        id:
          type: string
          format: uuid
          description: The event ID.
        name:
          type: string
          description: The event name.
        schema:
          type: object
          nullable: true
          description: A flat key/type map defining the event payload schema. Supported types are `string`, `number`, `boolean`, and `date`.
        created_at:
          type: string
          description: The date and time the event was created.
        updated_at:
          type: string
          nullable: true
          description: The date and time the event was last updated.
    EventSummary:
      type: object
      properties:
        id:
          type: string
          format: uuid
          description: The event ID.
        name:
          type: string
          description: The event name.
        schema:
          type: object
          nullable: true
          description: A flat key/type map defining the event payload schema. Supported types are `string`, `number`, `boolean`, and `date`.
        created_at:
          type: string
          description: The date and time the event was created.
        updated_at:
          type: string
          nullable: true
          description: The date and time the event was last updated.
    CreateEventRequest:
      type: object
      required:
        - name
      properties:
        name:
          type: string
          description: The name of the event. Cannot start with the reserved `resend:` prefix.
        schema:
          type: object
          nullable: true
          description: An optional flat key/type map defining the event payload schema. Supported types are `string`, `number`, `boolean`, and `date`.
    CreateEventResponse:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: 'event'
        id:
          type: string
          format: uuid
          description: The ID of the created event.
    ListEventsResponse:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: 'list'
        has_more:
          type: boolean
          description: Indicates if there are more results available.
          example: false
        data:
          type: array
          description: Array containing event information.
          items:
            $ref: '#/components/schemas/EventSummary'
    UpdateEventRequest:
      type: object
      required:
        - schema
      properties:
        schema:
          type: object
          nullable: true
          description: A flat key/type map defining the event payload schema. Set to `null` to clear the schema. Supported types are `string`, `number`, `boolean`, and `date`.
    UpdateEventResponse:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: 'event'
        id:
          type: string
          format: uuid
          description: The ID of the updated event.
    RemoveEventResponse:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: 'event'
        id:
          type: string
          format: uuid
          description: The ID of the deleted event.
        deleted:
          type: boolean
          description: Indicates whether the event was deleted.
          example: true
    SendEventRequest:
      type: object
      required:
        - event
      properties:
        event:
          type: string
          description: The name of the event to send.
        contact_id:
          type: string
          format: uuid
          description: The ID of the contact to associate with this event. Exactly one of `contact_id` or `email` must be provided.
        email:
          type: string
          format: email
          description: The email address to associate with this event. Exactly one of `contact_id` or `email` must be provided.
        payload:
          type: object
          additionalProperties: true
          description: An optional payload of key/value pairs to include with the event.
    SendEventResponse:
      type: object
      properties:
        object:
          type: string
          description: Type of the response object.
          example: 'event'
        event:
          type: string
          description: The name of the event that was sent.