[roshanjonah]

This candidate adds direct SMTP acceptance and delivery guidance to current Docs main and includes refreshed PR64 connection recovery in one combined product update. The SMTP guide explains that direct submissions using send-only keys or owner-approved Sending-resource tokens can be accepted during occupied sending capacity after storage and required credit reservation. SMTP 250 confirms acceptance for background sending, delivery can still fail, and 452 4.3.1 Insufficient credits. means the message was not accepted.

This is a source-only candidate. The announcement date remains <<TBD: verified publication date>>; merge and publication remain held until the release owner binds the deployed source, relevant live acceptance, verified publication date/order and exact publication approval. Present-tense draft copy does not qualify current live behaviour.

PR65 retains PR64 as an ancestor and adds to the same update; no duplicate changelog entry, replacement PR or force-push. Current hotfix/history, existing guide/frontmatter/links/icons, API snapshots and generated collections remain unchanged.

Validation results and exact hosted CI/review status accompany the owning reconciliation receipt. Historical public-readback font ERR_ABORTED STOP/UNKNOWN and raw-network export restriction remain separate; local source preview is not public acceptance.

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