Why AI Agent Completion Does Not Guarantee Email or Action Delivery

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When an AI agent finishes a task, its process exit code only confirms local completion — not that outbound actions like emails, payments, or API calls were actually delivered. Developers are advised to maintain a delivery ledger that separately tracks execution state and provider-confirmed delivery state for every external action. A stable idempotency key, generated before the first attempt and persisted in a database, ensures that restarts or retries do not duplicate the same logical action. Timeouts and dropped connections must be treated as 'delivery unknown' rather than success or failure, and reconciled later via provider lookup APIs or manual review queues. Merging delivery metrics into a single success counter can mask growing backlogs, so teams are urged to monitor dispatch attempts, provider acceptances, and unresolved records independently.

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