A message sent over SMTP submission was delivered but left nothing behind: the
account's Sent folder stayed empty. Webmail files its own copy after sending,
and a mail client cannot do it either, since IMAP APPEND is not implemented, so
nothing ever filled Sent for SMTP clients.
- ProcessOutboundEmailInput.FileSentCopy asks Submit to file the signed message
in the sender's Sent folder, as read (not unread), sharing the blob the
delivery jobs already reference; one copy per submission, not per recipient
- the SMTP submission session sets it; the webmail leaves it off because it
files its own copy without the Bcc line, and asking twice would duplicate it
- filed only after the message is durably queued, so a submission refused by the
send limit leaves nothing behind; a failure to file is logged, never returned,
because the mail is already on its way and the client would send it again
Tests: unit cases (asked/not asked, shared blob, failure swallowed, limit
refusal, no repository) and an end-to-end test on the real submission server
that fails with "Sent holds 0 messages" without the fix. Full go test ./...
(25 packages) with TEST_DATABASE_URL, go vet and lang-lint are clean.
Lucas Rayan
9c8b9c00fc