Send Auth0 email over SMTP

Configure a custom SMTP email provider in Auth0 so your tenant's emails deliver from your verified domain through Unitpost.

Need an API key?

SMTP password is a Unitpost API key with emails:send. Username is always unitpost.

  • 5,000 emails/month
  • 3 API keys
  • 5 sending domains
Get free SMTP key
  1. Open the email provider settings

    In the Auth0 dashboard go to Branding → Email Provider (or Emails → Provider on older tenants) and choose SMTP.

  2. Enter your Unitpost credentials

    Fromyou@yourdomain.com (verified)
    Hostsmtp.unitpost.com
    Port587
    Usernameunitpost
    PasswordYour Unitpost API key
  3. Save and send a test

    Save the provider, then use Auth0's Send Test Email button to verify the connection.

  4. Enable the emails you want

    Under Branding → Email Templates, toggle on verification, welcome, password-reset, and other templates. Auth0 renders them; Unitpost delivers.

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