I am running Zimbra Desktop build 1278. I have also installed the xmailManage.tag patch per the 08-28-2008, 03:42 PM instructions.
I am a Yahoo Mail Plus user, and was also a Mail Personal Address customer, and this account was just migrated to Yahoo! Custom Mailbox service (part of Yahoo Small Business) due to the discontinuation of the Personal Address service. All mail is consolidated through my Yahoo account, so I only have one inbox; email address are aliases.
My Yahoo Mail account is set up properly with Zimbra Desktop and is working. All mailboxes are set to sync. My issue, as a few others have reported, all of my folders and messages are not syncing properly. For example, Zimbra states my Sent folder contains 1456 messages, whereas Yahoo Mail reports 6581. Zimbra reports anther as 3696 vs. 20160 reported by Yahoo for the same folder (I've been using this for over 10 years!).
Any suggestions on how to address this issue would be most appreciated.