What the delivery states mean
Reference · Updated 2026-08-11 · Describes Sprint 5
A reply moves through queued, sending, sent, delivered and read. Only queued and retry-scheduled can still be stopped; once it is sending, it has left.
The states
- Queued
- In the outbound queue, waiting its turn. Cancellable.
- Retry scheduled
- An attempt failed and another is scheduled. Cancellable.
- Sending
- Handed to the channel. No longer cancellable — it is out of your hands.
- Sent
- The channel accepted it.
- Delivered
- The channel confirmed it reached the customer.
- Read
- The customer opened it. Not every channel reports this.
- Failed
- Something went wrong. The reason is recorded.
Why the difference matters
Sent and delivered are different claims. Sent means the channel took it; delivered means the channel says the customer got it. Showing one as the other would tell you a customer had been reached when nobody knows that.
What this does not do
Read receipts depend on the channel. Where a channel does not report them, the state stops at delivered — INVTION does not infer that a message was read.
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