The relay's delivery reports bounce, block and count campaign mail after hand-off

FeatureEmailService
Shipped
September 12, 2026 at 1:12 AM UTC
Author
Kamo
Commit
95950d6

POST **************** takes the platform relay's reports of what became of each message, matched to the recipient row by the X-Kamo-Ref header or, failing that, the latest row sent to the address in the last seven days. A hard bounce (5.1.x, 5.2.1, 5.4.4) marks the row BOUNCED and suppresses the address. A block (5.7.x) marks it FAILED but keeps the address, since the refusal was of the sender, not the mailbox. Anything else permanent is a plain failure. A deferral's reason is kept on the row until delivery. Only rows still SENT are moved, and the warm-up counts each report once, against the day the message was sent, so the reporter can resend a batch safely.

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