To get the most out of this guide, you’ll need to:

1. Get the Resend SMTP credentials

When configuring your SMTP integration, you’ll need to use the following credentials:

  • Host:
  • Port: 465
  • Username: resend
  • Password: YOUR_API_KEY

2. Integrate with Auth0 SMTP

After logging into your Auth0 dashboard, you’ll need to enable the SMTP integration.

  1. From your Auth0 dashboard, go to Branding > Email Provider.
  2. Enable the Use my own email provider toggle.
  3. Select SMTP Provider.
  4. Enter a From email address, and then enter the Resend SMTP server’s Host, Port, Username, and your API key as the Password.
Auth0 SMTP - Email Provider Settings

3. Send a test email

Once you have configured the SMTP settings, click Save. Next send a test email using the Send Test Email button. If everything is configured correctly, you will receive a confirmation email. If you did not receive an email, check your Auth0 Logs.