Email for
developers

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

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  const { data, error } = await resend.emails.send({
7    from: 'onboarding@resend.dev',
8    to: 'delivered@resend.dev',
9    subject: 'Hello World',
10    html: '<strong>it works!</strong>'
11  });
12
13  if (error) {
14    return console.log(error);
15  }
16
17  console.log(data);
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.

Learn more

delivered

to with subject

on agent running on

clicked

from on

on agent running on

opened

from with subject

on agent running on

complained

to with feedback

on agent running on

bounced

to with type

on agent running on

Modular Webhooks

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

Learn more

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 Started Check the Docs

1import { Body, Button, Column, Container, Head, Heading, Hr, Html, Img, Link, Preview, Row, Section, Text, Tailwind } from '@react-email/components';
2import * as React from 'react';
3
4const WelcomeEmail = ({
5  username = 'newuser',
6  company = 'ACME',
7}: WelcomeEmailProps) => {
8  const previewText = `Welcome to ${company}, ${username}!`;
9
10  return (
11    <Html>
12      <Head />
13      <Preview>{previewText}</Preview>
14      <Tailwind>
15      <Body className="bg-white my-auto mx-auto font-sans">
16        <Container className="my-10 mx-auto p-5 w-[465px]">
17          <Section className="mt-8">
18            <Img
19              src={`${baseUrl}/static/example-logo.png`}
20              width="80"
21              height="80"
22              alt="Logo Example"
23              className="my-0 mx-auto"
24            />
25          </Section>
26          <Heading className="text-2xl font-normal text-center p-0 my-8 mx-0">
27            Welcome to <strong>{company}</strong>, {username}!
28          </Heading>
29          <Text className="text-sm">
30            Hello {username},
31          </Text>
32          <Text className="text-sm">
33            We're excited to have you onboard at <strong>{company}</strong>. We hope you enjoy your journey with us. If you have any questions or need assistance, feel free to reach out.
34          </Text>
35          <Section className="text-center mt-[32px] mb-[32px]">
36              <Button
37                pX={20}
38                pY={12}
39                className="bg-[#00A3FF] rounded text-white text-xs font-semibold no-underline text-center"
40                href={`${baseUrl}/get-started`}
41              >
42                Get Started
43              </Button>
44          </Section>
45          <Text className="text-sm">
46            Cheers,
47            <br/>
48            The {company} Team
49          </Text>
50        </Container>
51      </Body>
52      </Tailwind>
53    </Html>
54  );
55};
56
57interface WelcomeEmailProps {
58  username?: string;
59  company?: string;
60}
61
62const baseUrl = process.env.URL
63  ? `https://${process.env.URL}`
64  : '';
65
66export default WelcomeEmail;

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.

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

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.

Beyond expectations

Resend is driving remarkable developer experiences that enable success
stories, 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 GoinFounder of Hammr

Email reimagined.
Available today.

Get Started Contact Us

Email for
developers

First-class
developer experience

Test Mode

Modular Webhooks

Develop emails using React

Welcome to ACME, user!

Reach humans, not spam folders

Proactive blocklist tracking

Faster Time to Inbox

Build confidence with BIMI

Managed Dedicated IPs

Dynamic suppression list

IP and domain monitoring

Verify DNS records

Battle-tested infrastructure

Prevent spoofing with DMARC

Everything in your control

Intuitive analytics

Full Visibility

Domain Authentication

Beyond expectations

Email reimagined.
Available today.

Email fordevelopers

First-class developer experience

Test Mode

Modular Webhooks

Develop emails using React

Welcome to ACME, user!

Reach humans, not spam folders

Proactive blocklist tracking

Faster Time to Inbox

Build confidence with BIMI

Managed Dedicated IPs

Dynamic suppression list

IP and domain monitoring

Verify DNS records

Battle-tested infrastructure

Prevent spoofing with DMARC

Everything in your control

Intuitive analytics

Full Visibility

Domain Authentication

Beyond expectations

Email reimagined.Available today.

Email for
developers

First-class
developer experience

Email reimagined.
Available today.