Replit is a platform where millions of developers build and deploy apps in the browser.

Most apps end up needing email at some point—to notify users of important updates, account changes, or one time passwords.

Email was a critical feature for Replit to offer to its users, but it had potential to be tricky to set up. Then there's deliverability, compliance, and trust & safety concerns to consider.

Replit needed a partner to handle these complexities in a reliable, simple, and developer-friendly way. They turned to Resend to help them build a seamless email sending experience.

Email is Core to Replit’s User Experience

In Replit agents and automations, builders can start sending test emails to themselves without needing to worry about the details. This feature is powered by Resend.

Once Replit builders want to start sending emails to their users, they can use the Resend connector to set up a custom domain and start sending.

Email is a big part of how Replit apps talk to users—onboarding flows, notifications, account updates, everything. We needed something reliable that 'just works' so developers don’t have to think about email infrastructure.

Since email is such a critical piece of building an app, Replit wanted a solution that would work reliably without adding overhead or complexity.

Smooth Integration into Production

Replit's engineering team used their existing patterns to build a Resend connector that's simple to use. The result was an end-to-end working system from the start.

We built the Resend connector using our standard Replit Connectors pattern, plugged in the API settings, tested a few flows, and it worked end-to-end right away. No weird edge cases, no surprises.

The simplicity and reliability of Resend allowed Replit engineers to focus on building features rather than troubleshooting email infrastructure.

Almost immediately, their users noticed and started building with Resend inside of their Replit apps.

A Dependable Partner

Even the best systems can raise questions, and Resend’s support team has proven to be a dependable partner for Replit. Every inquiry has been met with responses that help the team move efficiently.

Support was quick and clear. Any time we had a question, we got direct, practical answers that unblocked us fast.

For Replit, Resend has become a reliable, developer-friendly solution for programmatic email, helping the platform scale and offer a better experience for their users without email infrastructure headaches.

Use Resend and Replit together

Learn how to send emails from your Replit app using Resend.