Notification delivery states reference

• Intent: durable logical event/recipient/channel identity exists; no provider receipt is implied.
• Scheduled/queued: work is eligible for later processing.
• Deferred: provider admission/capacity/rate limiting postponed the attempt.
• Attempted/sent request: OpsKnight called the provider; human receipt is not implied.
• Retryable failure: a bounded later attempt can still be valid.
• Permanent failure: configuration, credential, endpoint, or non-retryable provider outcome requires correction.
• Successful/accepted: provider accepted according to its API; final handset/inbox/device delivery may need feedback.
• Feedback outcome: provider callback/status supplies later delivery evidence.
• Superseded/discarded: current incident state or escalation generation made stale delivery inappropriate.

Always interpret state with incident generation, recipient endpoint, attempt count, provider ID, and current incident lifecycle. See Inspect notification delivery.