What is Return Path Certification?

**Return Path** Certification (now **Validity** Certification) provides **sender reputation** verification to participating MBPs. Certified senders meeting strict standards receive preferential treatment: bypassing some filtering and having images displayed by default.

Requirements include: strong **Sender Score**, low complaint rates, proper authentication, clean list practices, and ongoing compliance monitoring. **Validity** audits certified senders regularly, decertifying those falling below standards.

Benefits at participating MBPs may include: **inbox placement** advantages, image unblocking, and link activation. Not all MBPs participate, and benefits vary. Certification costs require sufficient volume to justify investment through improved delivery rates.