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Email Delivery Problems

Troubleshoot email sending failures.

Emails Not Sending​

Check SMTP configuration:

MAIL_FROM_ADDRESS=noreply@example.com
MAIL_HOST=smtp.example.com
MAIL_PORT=587
MAIL_USERNAME=your-username
MAIL_PASSWORD=your-password

Connection Timeout​

Symptom: ECONNREFUSED or ETIMEDOUT

Fixes:

  1. Verify SMTP host and port
  2. Check firewall rules allow outbound port 587/465
  3. Try port 465 (SSL) vs 587 (TLS)

Authentication Failed​

Fixes:

  1. Check username/password
  2. For Gmail: enable "Less secure app access" or use App Passwords
  3. For Office 365: use OAuth2 app registration

Custom SMTP Per Organization​

Organizations can configure separate SMTP via Settings → Custom SMTP. See Custom SMTP.

Testing Email​

Use a test service like Mailtrap during development:

MAIL_HOST=sandbox.smtp.mailtrap.io
MAIL_PORT=2525
MAIL_USERNAME=your-mailtrap-user
MAIL_PASSWORD=your-mailtrap-pass