import { Resend } from 'resend';

const resend = new Resend('re_123456789');

await resend.batch.send([
  {
    from: 'Acme <onboarding@resend.dev>',
    to: ['foo@gmail.com'],
    subject: 'hello world',
    html: '<h1>it works!</h1>',
  },
  {
    from: 'Acme <onboarding@resend.dev>',
    to: ['bar@outlook.com'],
    subject: 'world hello',
    html: '<p>it works!</p>',
  },
]);

{
  "data": [
    {
      "id": "ae2014de-c168-4c61-8267-70d2662a1ce1"
    },
    {
      "id": "faccb7a5-8a28-4e9a-ac64-8da1cc3bc1cb"
    }
  ]
}

Instead of sending one email per HTTP request, we provide a batching endpoint that permits you to send up to 100 emails in a single API call.

​
Body Parameters

from
string
required

Sender email address.

To include a friendly name, use the format "Your Name <sender@domain.com>".

to
string | string[]
required

Recipient email address. For multiple addresses, send as an array of strings. Max 50.

subject
string
required

Email subject.

bcc
string | string[]

Bcc recipient email address. For multiple addresses, send as an array of strings.

cc
string | string[]

Cc recipient email address. For multiple addresses, send as an array of strings.

reply_to
string | string[]

Reply-to email address. For multiple addresses, send as an array of strings.

html
string

The HTML version of the message.

text
string

The plain text version of the message.

react
string

The React component used to write the message. Only available in the Node.js SDK.

headers
object

Custom headers to add to the email.

​
Limitations

The attachments and tags fields are not supported yet.

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