I can see that you have put some thoughts in this. While your thinking is valid, right now our Gmail mail solution is vanilla IMAP. Doing what you have suggested is no small deviation. We'd rather see if gmail will eventually open up their own protocol API for mail sync. Using undocumented hack (relying on something like ID header) is not our preference.
Now there is a backdoor for this. Open <install>/conf/datasource.properties and you'll see we have disabled "All Mail". The ".ignore" keyword basically means we will skip those folders. You can try to edit this file to allow sync of those folders, but mind you this not a supported behavior so we never tested this way. |