When you archive a message using GMail it gets removed from INBOX but still remains in the "All Mail" folder. Unfortunately, there is currently no way to view the GMail "All Mail" folder from Zimbra Desktop.
However, the equivalent way to do this within Zimbra Desktop (and IMAP in general) would be to create a new local folder for archived messages and move them to there. If you enable synchronization for this folder then these messages will also get backed up to an identical folder on the GMail server. Otherwise, the messages will just get archived locally.
Let me know if this answers your question.
- David |