Configure Mailgun as External SMTP Email Provider

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Prerequisites

• To ensure that emails can be sent from Auth0 to your SMTP, open ports and allow inbound connections from specific IP addresses. To update the list of IPs, navigate to Dashboard > Branding > Email Provider. See Add IP Addresses to AllowList for details.
• You must have a Mailgun account.

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Configure Mailgun

1. Log in to your Mailgun.
2. Navigate to Mailgun Sending > Domains, and add your custom domain. Mailgun allows sending emails from only verified domains.
3. Navigate to Mailgun Settings > API Keys. Your API key was created when you signed up for your account; copy it from Private API Key.
4. Navigate to Auth0 Dashboard > Branding > Email Provider.
5. Activate the Use my own email provider toggle.
6. Click the Mailgun logo.
7. Provide a From email address, enter the Domain you previously added to Mailgun, enter the Mailgun API Key you previously copied, select your Region.
8. Click Save.

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Test email