60237: The given domain is on a deny list

Twilio blocked the email address domain you provided because that domain is not allowed for this Verify flow. This error commonly appears when you use a public email domain for scenarios that require a business or custom domain.

• You submitted an email address that uses a public domain such as Gmail, Yahoo, Hotmail, or Outlook.
• Your Verify configuration or onboarding flow requires a custom business domain instead of a consumer email domain.
• The domain in the email address matches a domain that Twilio does not allow for that feature.

• Use an email address with a custom company-owned domain instead of a public email provider.
• Check the email address you submitted and confirm the domain is correct and spelled properly.
• Review your Verify integration and confirm you are sending the intended email address in the request.
• If you need help determining whether your use case supports the email you want to use, review the Verify documentation and your account configuration.

• Twilio Verify documentation
• Verify API documentation