Record provider feedback
What It Does
SES publishes delivery or engagement feedback.
The Flow
When Something Fails
The hop rows identify each retry boundary, any state left behind and the available observer. Derived event identity ignores duplicates; precedence and earliest timestamps tolerate reordering. Database event updates are atomic, but subsequent address suppression has a separate failure boundary.
Open Design Questions
Copy-recipient events remain historical without changing primary-recipient delivery outcome. Untagged provider events are acknowledged as unrelated. Tagged messages not yet visible can be retried before dead-letter handling.