Resend raises $3M seed round

Email for
developers

The best API to reach humans instead of spam folders. Build, test, and deliver transactional emails at scale.

Get StartedDocumentation
Backed byCombinator

Companies of all sizes trust Resend to deliver their most important emails.

Today

A simple, elegant interface so you can start sending emails in minutes. It fits right into your code with SDKs for your favorite programming languages.

1import { Resend } from 'resend';
2

3const resend = new Resend('re_123456789');
4

5(async function() {
6  try {
7    const data = await resend.emails.send({
8      from: 'onboarding@resend.dev',
9      to: 'delivered@resend.dev',
10      subject: 'Hello World',
11      html: '<strong>it works!</strong>'
12    });
13

14    console.log(data);
15  } catch (error) {
16    console.error(error);
17  }
18})();

First-class
developer experience

We are a team of engineers who love building tools for other engineers. Our goal is to create the email platform we've always wished we had — one that just works.

HTTP 200:
{ "id": "26abdd24-36a9-475d-83bf-4d27a31c7def" }
HTTP 200:
{ "id": "cc3817db-d398-4892-8bc0-8bc589a2cfb3" }
HTTP 200:
{ "id": "4ea2f827-c3a2-471e-b0a1-8bb0bcb5c67c" }
HTTP 200:
{ "id": "8e1d73b4-ebe1-485d-bce8-0d7044f1d879" }
HTTP 200:
{ "id": "a08045a6-122a-4e16-ace1-aa81df4278ac" }
HTTP 200:
{ "id": "c3be1838-b80e-457a-9fc5-3abf49c3b33e" }
HTTP 200:
{ "id": "13359f77-466e-436d-9cb2-ff0b0c9a8af4" }

Test Mode

Simulate events and experiment with our API without the risk of accidentally sending real emails to real people.

delivered
to with subject
on
clicked
from on
on
opened
from with subject
on
complained
to with feedback
on
bounced
to with type
on

Modular Webhooks

Receive real-time notifications directly to your server. Every time an email is delivered, opened, bounces, or a link is clicked.

Develop emails using React

Create beautiful templates without having to deal with <table> layouts and HTML. Powered by react-email, our open source component library.

Get StartedCheck the Docs
Logo Example

Welcome to ACME, user!

Hello newuser,

We're excited to have you onboard at ACME. We hope you enjoy your journey with us. If you have any questions or need assistance, feel free to reach out.

Get Started

Cheers,
The ACME Team

Reach humans, not spam folders

Proactive blocklist tracking

Be the first to know if your domain is added to a DNSBLs such as those offered by Spamhaus with removal requests generated by Resend.

Faster Time to Inbox

Send emails from the region closest to your users. Reduce delivery latency with North American, South American, and European regions.

Build confidence with BIMI

Showcase your logo and company branding with BIMI. Receive guidance to obtain a VMC - the email equivalent of a checkmark on social media.

Managed Dedicated IPs

Get a fully managed dedicated IP that automatically warms up and autoscales based on your sending volume, no waiting period.

Dynamic suppression list

Prevent repeated sending to recipients who no longer want your email and comply with standards like the CAN-SPAM Act and others.

IP and domain monitoring

Monitor your DNS configuration for any errors or regressions. Be notified of any changes that could hinder your deliverability.

Verify DNS records

Protect your reputation by verifying your identity as a legitimate sender. Secure your email communication using DKIM and SPF.

Battle-tested infrastructure

Rely on a platform of reputable IP's used by trustworthy senders with distributed workloads across different IP pools.

Prevent spoofing with DMARC

Avoid impersonation by creating DMARC policies and instructing inbox providers on how to treat unauthenticated email.

Vecel logo
Resend is transforming email for developers. Simple interface, easy integrations, handy templates. What else could we ask for.
Guillermo Rauch

Guillermo Rauch

CEO at Vercel

Everything in your control

All the features you need to manage your email sending, troubleshoot with
detailed logs, and protect your domain reputation – without the friction.

Resend Dashboard - Overview

Beyond expectations

Resend is driving remarkable developer experiences that enable successstories, empower businesses, and fuel growth across industries and individuals.

  • "Our team loves Resend. It makes email sending so easy and reliable. After we switched to Dedicated IPs, our deliverability improved tremendously and we don't hear complaints about emails landing on spam anymore."
    Vlad Matsiiako
    Vlad Matsiiako
    Vlad MatsiiakoCo-founder of Infisical
  • "I've used Mailgun, Sendgrid, and Mandrill and they don't come close to providing the quality of developer experience you get with Resend."
    Brandon Strittmatter
    Brandon Strittmatter
    Brandon StrittmatterCo-founder of Outerbase
  • "Resend is an amazing product. It was so easy to switch over. I feel confident knowing that our important emails are in good hands with Resend. Everyone should be using this."
    Shariar Kabir
    Shariar Kabir
    Shariar KabirFounder at Ruby Card
  • "All of our customers are located in South America, so having a solution that could send emails from the region closest to our users is very important. Resend's multi-region feature is a game-changer for us."
    Giovanni Keppelen
    Giovanni Keppelen
    Giovanni KeppelenCTO & Partner at VOA Hoteis
  • "The speed and ease of integrating with the product was incredible, but what really stood out was their intricate knowledge of email and relentless support day or night. Oh and we also ended up winning Product of the week."
    Sam Ducker
    Sam Ducker
    Sam DuckerCo-founder of Anyone
  • "As a developer I love the approach that the Resend team is taking. Its so refreshing. They are also extremely user-centric and helpful in terms of getting you up and running, sending beautiful emails that deliver."
    Hahnbee Lee
    Hahnbee Lee
    Hahnbee LeeCo-Founder at Mintlify
  • "The Resend team have built a great product in a space that hasn't seen 10x innovation for years. Engineering peers are raving about Resend - it's such a smoother dev experience."
    Roberto Riccio
    Roberto Riccio
    Roberto RiccioHead of Product at Alliance
  • "If you're a developer or working on a startup, you're going to love Resend's approach to emailing."
    Joe DeMaria
    Joe DeMaria
    Joe DeMariaCo-founder & CEO of SpecCheck
  • "We were up and running with Resend in no time. It was seamless to integrate into our existing workflow and gave us a tremendous amount of visibility into our email capabilities. Simple to say, it was a no-brainer."
    Ty Sharp
    Ty Sharp
    Ty SharpCo-founder & CEO of InBuild
  • "Resend not only streamlines our emails to accommodate our expanding customer base, but their team also offered valuable hands-on support during the transition from our old API. Their product is visually stunning and seamlessly integrates with React Email."
    Thiago Costa
    Thiago Costa
    Thiago CostaCo-founder of Fey and Narative
  • "As of our last deployment all of our emails are using Resend. We are loving the development experience of React Email - not having to leave my dev environment to develop new emails is a game-changer."
    Adam Rankin
    Adam Rankin
    Adam RankinFounding Engineer at Warp
  • "Working with Resend has been amazing. By using Webhooks, I'm able to track email opened/clicked events via Segment and log those events in LogSnag for visibility. I highly believe in the people behind Resend."
    Taylor Facen
    Taylor Facen
    Taylor FacenFounder of Finta
  • "Resend is super easy to set up. Loving the modern approach the team is taking with supercharging email. Never been a fan of other clunky tools."
    Brek Goin
    Brek Goin
    Brek GoinFounder of Hammr
  • "Our team loves Resend. It makes email sending so easy and reliable. After we switched to Dedicated IPs, our deliverability improved tremendously and we don't hear complaints about emails landing on spam anymore."
    Vlad Matsiiako
    Vlad Matsiiako
    Vlad MatsiiakoCo-founder of Infisical
  • "I've used Mailgun, Sendgrid, and Mandrill and they don't come close to providing the quality of developer experience you get with Resend."
    Brandon Strittmatter
    Brandon Strittmatter
    Brandon StrittmatterCo-founder of Outerbase
  • "Resend is an amazing product. It was so easy to switch over. I feel confident knowing that our important emails are in good hands with Resend. Everyone should be using this."
    Shariar Kabir
    Shariar Kabir
    Shariar KabirFounder at Ruby Card
  • "All of our customers are located in South America, so having a solution that could send emails from the region closest to our users is very important. Resend's multi-region feature is a game-changer for us."
    Giovanni Keppelen
    Giovanni Keppelen
    Giovanni KeppelenCTO & Partner at VOA Hoteis
  • "The speed and ease of integrating with the product was incredible, but what really stood out was their intricate knowledge of email and relentless support day or night. Oh and we also ended up winning Product of the week."
    Sam Ducker
    Sam Ducker
    Sam DuckerCo-founder of Anyone
  • "As a developer I love the approach that the Resend team is taking. Its so refreshing. They are also extremely user-centric and helpful in terms of getting you up and running, sending beautiful emails that deliver."
    Hahnbee Lee
    Hahnbee Lee
    Hahnbee LeeCo-Founder at Mintlify
  • "The Resend team have built a great product in a space that hasn't seen 10x innovation for years. Engineering peers are raving about Resend - it's such a smoother dev experience."
    Roberto Riccio
    Roberto Riccio
    Roberto RiccioHead of Product at Alliance
  • "If you're a developer or working on a startup, you're going to love Resend's approach to emailing."
    Joe DeMaria
    Joe DeMaria
    Joe DeMariaCo-founder & CEO of SpecCheck
  • "We were up and running with Resend in no time. It was seamless to integrate into our existing workflow and gave us a tremendous amount of visibility into our email capabilities. Simple to say, it was a no-brainer."
    Ty Sharp
    Ty Sharp
    Ty SharpCo-founder & CEO of InBuild
  • "Resend not only streamlines our emails to accommodate our expanding customer base, but their team also offered valuable hands-on support during the transition from our old API. Their product is visually stunning and seamlessly integrates with React Email."
    Thiago Costa
    Thiago Costa
    Thiago CostaCo-founder of Fey and Narative
  • "As of our last deployment all of our emails are using Resend. We are loving the development experience of React Email - not having to leave my dev environment to develop new emails is a game-changer."
    Adam Rankin
    Adam Rankin
    Adam RankinFounding Engineer at Warp
  • "Working with Resend has been amazing. By using Webhooks, I'm able to track email opened/clicked events via Segment and log those events in LogSnag for visibility. I highly believe in the people behind Resend."
    Taylor Facen
    Taylor Facen
    Taylor FacenFounder of Finta
  • "Resend is super easy to set up. Loving the modern approach the team is taking with supercharging email. Never been a fan of other clunky tools."
    Brek Goin
    Brek Goin
    Brek GoinFounder of Hammr

Email reimagined.
Available today.

Get StartedContact Us