Riposte solution
COPYUID provides the UIDs of messages that were copied to another mailbox. It's an informational response after a successful COPY. Riposte will use this to keep track of copied messages. No direct action needed on your part beyond perhaps updating any references to the new UIDs if your app tracks messages across folders.
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]