Auth0 Integration

Send Auth0 transactional emails through Resend using the official integration.

Auth0 now supports Resend as an official email provider. Crucial emails like verification codes and password resets can be delivered through Resend in just a few minutes.

Getting started

Before connecting Auth0 to Resend, you'll need:

A verified domain in your Resend dashboard.
An API key from your API Keys page.

Basic configuration

In the Auth0 Dashboard, go to Branding > Email Provider, toggle on Use my own email provider, and select Resend. Set the From address to match your Resend verified domain and enter your API key. Click Send Test Email to verify it works.

Using Auth0 Actions

For more control (per-organization sender addresses, conditional routing, custom logic), use an Auth0 Action. Add resend as a dependency, store your API key as a secret named RESEND_API_KEY, and deploy a custom action to the Post Login trigger.

Customizing Email Templates

Go to Branding > Email Templates in the Auth0 Dashboard. For advanced templating, use React Email or Resend Templates within Auth0.

See the Auth0 docs for the full setup guide.