Password Reset Email Deliverability Explained: Custom Domain Setup Through Template Ownership

Optimal password-reset email deliverability requires a clear contract where teams own message templates while sending systems handle authentication. For marketplace sellers, reset-token creation and template meaning should remain in the application, utilizing DKIM for custom domain authentication. Integration options include Amazon SES for AWS-centered teams, Twilio SendGrid for specialized workflows, Postmark for narrow transactional scopes, or Resend for developer-facing APIs. Maintaining explicit region routing and data handling across US and EU markets is essential for security transactions.