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Email complianceReviewed September 7, 2026

What is Email deliverability?

AWS defines deliverability as the share of sent email that reaches recipient inboxes rather than being diverted elsewhere. Acceptance is only the handoff; inbox placement is the outcome to watch.

Who this applies to#

  • Applies to senders monitoring placement and delivery outcomes

What Email deliverability requires#

  • Avoid repeated delivery attempts to hard-bounce addresses, and handle complaint feedback before the same problem reaches more recipients

What this does not require#

  • Server acceptance alone does not establish inbox placement or show where the mailbox provider put the message

Common mistakes#

  1. Equating API acceptance with inbox placement

Email deliverability checklist#

  • Measure inbox outcomes
  • Suppress hard bounces
  • Monitor complaints

Commonly confused with#

OnVoard's take#

Deliverability is an outcome to measure, not a synonym for successful submission.

Official sources#