
Start sending transactional emails with a robust
REST API, native SDKs, and reliable SMTP service.

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.

import { Resend } from 'resend';const resend = new Resend('re_xxxxxxxxx');await resend.emails.send({from: 'Acme <onboarding@resend.dev>',to: ['delivered@resend.dev'],subject: 'hello world',html: '<p>it works!</p>',});
Add SMTP seamlessly to your existing stack,
and with the tools you already know and love.
Every email generates a series of other events like opens, clicks, and bounces.
Visualize the details from each event or store them in your own database using webhooks.

Whether you need to send welcome emails or notify users of
important events, there are many reasons to send transactional emails.
Help users recover access by sending emails in a timely manner.
Send order details to customers after they make a purchase.
Let users know when a trial is about to expire or when it's time to upgrade.
Keep users informed with important updates and alerts.
Enable collaboration by inviting an user to create an account or join a team.
Update users on changes to your terms of service or privacy policy.
Notify users of important events or issues in your application.
Charge customers by sending attachments in any format.
Send personalized messages right after new users sign up.
Use the SDK to create, verify, update, and delete domains.
Manage API keys, audiences, contacts, and more programmatically.
import { Resend } from 'resend';const resend = new Resend('re_xxxxxxxxx');resend.domains.update({id: '4dd369bc-aa82-4ff3-97de-514ae3000ee0',openTracking: false,clickTracking: true,});
"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
"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
"We value tools that feel stable, well thought out, and aligned with the standards we expect across our stack. Resend meets those expectations. It lets our team stay focused on building the larger platform rather than getting pulled into the overhead that typically comes with legacy email infrastructure."Bradley GreenwoodVP of Engineering at MrBeast
"Our partnership with Resend has been a great experience. They've made sure we can focus on what we do best—building our product and growing our business."Sahil LavingiaCEO of Gumroad
"Switching over to Resend from SendGrid marked a significant improvement in our email management. We started with a small test - waitlist emails for our iOS and Windows apps. Within 30 minutes, we were done."Thomas MannFounder & CEO of Raycast
"The simplicity and reliability of Resend allowed our engineers to focus on building features rather than troubleshooting email infrastructure."Amadeo PellicceConnectors, Agents and Automations Lead at Replit
"We're a small team with a lot on our plates. Email infrastructure is something we don't want to think about, and with Resend we don't have to."Peter SuhmOps at Tailwind
"The best part about taking Resend into production was that there was no friction at all."Tara NagarSoftware Engineer at Braintrust
"The flexibility of Resend is what we value most. It allows us to quickly adapt and refine our email communications as our products evolve."Glauber CostaFounder and CEO at Turso
"Resend is email with simpler APIs, better webhooks, and best-in-class debugging."Dan FarrellyCTO and Co-Founder of Inngest
"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
"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
"We value tools that feel stable, well thought out, and aligned with the standards we expect across our stack. Resend meets those expectations. It lets our team stay focused on building the larger platform rather than getting pulled into the overhead that typically comes with legacy email infrastructure."Bradley GreenwoodVP of Engineering at MrBeast
"Our partnership with Resend has been a great experience. They've made sure we can focus on what we do best—building our product and growing our business."Sahil LavingiaCEO of Gumroad
"Switching over to Resend from SendGrid marked a significant improvement in our email management. We started with a small test - waitlist emails for our iOS and Windows apps. Within 30 minutes, we were done."Thomas MannFounder & CEO of Raycast
"The simplicity and reliability of Resend allowed our engineers to focus on building features rather than troubleshooting email infrastructure."Amadeo PellicceConnectors, Agents and Automations Lead at Replit
"We're a small team with a lot on our plates. Email infrastructure is something we don't want to think about, and with Resend we don't have to."Peter SuhmOps at Tailwind
"The best part about taking Resend into production was that there was no friction at all."Tara NagarSoftware Engineer at Braintrust
"The flexibility of Resend is what we value most. It allows us to quickly adapt and refine our email communications as our products evolve."Glauber CostaFounder and CEO at Turso
"Resend is email with simpler APIs, better webhooks, and best-in-class debugging."Dan FarrellyCTO and Co-Founder of Inngest
"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
"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
"We value tools that feel stable, well thought out, and aligned with the standards we expect across our stack. Resend meets those expectations. It lets our team stay focused on building the larger platform rather than getting pulled into the overhead that typically comes with legacy email infrastructure."Bradley GreenwoodVP of Engineering at MrBeast
"Our partnership with Resend has been a great experience. They've made sure we can focus on what we do best—building our product and growing our business."Sahil LavingiaCEO of Gumroad
"Switching over to Resend from SendGrid marked a significant improvement in our email management. We started with a small test - waitlist emails for our iOS and Windows apps. Within 30 minutes, we were done."Thomas MannFounder & CEO of Raycast
"The simplicity and reliability of Resend allowed our engineers to focus on building features rather than troubleshooting email infrastructure."Amadeo PellicceConnectors, Agents and Automations Lead at Replit
"We're a small team with a lot on our plates. Email infrastructure is something we don't want to think about, and with Resend we don't have to."Peter SuhmOps at Tailwind
"The best part about taking Resend into production was that there was no friction at all."Tara NagarSoftware Engineer at Braintrust
"The flexibility of Resend is what we value most. It allows us to quickly adapt and refine our email communications as our products evolve."Glauber CostaFounder and CEO at Turso
"Resend is email with simpler APIs, better webhooks, and best-in-class debugging."Dan FarrellyCTO and Co-Founder of Inngest