In Amazon Simple Email Service (SES), setting a custom MAIL FROM (Return-Path) domain is a feature that allows you to specify a custom domain for the “MAIL FROM” address in the email headers. The “MAIL FROM” address is used as the return path for bounces and other email delivery-related notifications. Here are reasons why you might want to set a custom MAIL FROM domain in Amazon SES:
- Branding: Using a custom MAIL FROM domain allows you to reinforce your brand in the email delivery process. Instead of using the default SES domain in the return path, you can use your own domain, which enhances the professional appearance of your emails.
- Improved Deliverability: Setting a custom MAIL FROM domain can positively impact email deliverability. Some email receivers use the return path domain as a factor in assessing the legitimacy of an email. Having a custom domain that aligns with your sender identity can help establish trust with email providers.
- Bounce Handling: When there are issues with email delivery, such as bounces or other delivery failures, having a custom MAIL FROM domain allows you to receive bounce notifications at your specified email address. This enables you to monitor and take appropriate action on delivery issues promptly.
- DMARC (Domain-based Message Authentication, Reporting, and Conformance) Compliance: If you are implementing DMARC for email authentication, having a custom MAIL FROM domain helps align your authentication records with your sending domain, enhancing email security and authentication.
- Consistency Across Emails: Using a consistent custom MAIL FROM domain across your emails ensures a cohesive and professional appearance. It contributes to a unified email strategy and reinforces the legitimacy of your email communications.
Keep in mind that while there are benefits to using a custom MAIL FROM domain, it’s important to follow best practices for email deliverability, including obtaining explicit consent from recipients, providing clear opt-out options, and maintaining a positive sender reputation.