## Delivery truth

A destination is **published** only when the platform confirms it on read-back — with one labelled exception: Telegram has no read-back, so a Telegram destination is published on Telegram's own send response (`evidence_kind = send_response`), and a lost Telegram response stays `uncertain` until a workspace owner or admin forces a retry or marks it resolved. Otherwise it is one of: `pending`, `deferred` (rate limit), `in_progress`, `published_limited` (on the platform but not publicly visible — e.g. self-only before a platform audit, creator-only on trial access; never counted as live), `awaiting_human_finish` (inbox routes; not done until the read-back confirms the human finished), `failed` (provably nothing published; retryable), `uncertain` (a request may have landed), `blocked` (the platform needs an in-app action), `held_same_asset`, `cancelled`.

- **Receipts** are an append-only checkpoint log per destination; a restart resumes the stage, not the post.

- **Uncertain is never retried automatically.** A resolution probe (read-back search) runs on a backoff; it either finds the post live or unlocks a normal retry. A forced retry requires an explicit acknowledgement that a duplicate is possible.

- **Automatic retries** apply only to provable pre-send failures, bounded to three attempts with backoff.

- **Flags** record degradations on the receipt (disclosure not settable on a route, playlist add failed, first comment failed, link not shortened, thread part failed) and surface in the attention feed.

- **Handoff packs** give the human finishing an inbox-route post the caption and every toggle to set, phone-sized.

- **Engagement** (views, likes, comments, shares) is the platform's number, pulled after publish and never part of delivery truth — see [engagement coverage](/docs/engagement) for what each platform exposes.

- **Notifications**: failures, uncertain outcomes, handoffs, parked posts and approvals can email you or call a signed webhook, so a closed assistant conversation never silences a failed post.

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HTML version: https://a1lane.ai/docs/delivery