Riposte solution
UIDNOTSTICKY indicates that the mailbox's UIDs are not stable (e.g., a non-persistent mailbox). This is a protocol nuance: if you reconnect, message UIDs might change. No specific action can change this; it’s a property of the mailbox. Riposte will treat this mailbox carefully (likely avoiding caching message UIDs across sessions). If you see this, be cautious about persisting message IDs for that mailbox.
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]