Riposte solution
UNSEEN provides the number of the first unseen (unread) message in the mailbox. This is informational for clients. Riposte might use this for metrics, but your app doesn't have to do anything. If needed, you could use this info to show a user how many new emails they have, but Riposte likely provides unread counts via its own endpoints.
Quick facts
- Provider
- IMAP
- Endpoint / surface
- IMAP Protocol
Why it happens
[Protocol-level condition per RFC/extension]
How to fix it
[Adjust client behavior per RFC semantics; often retry or change command/parameters]