FAQ - Viewing unread or flagged messages
Posted on June 30th, 2008 by dekman
To view only your unread messages type in “is: unread” without the quotes in the search box at the top of the mail page. This will find all of your messages marked as unread.
To view your unread messages from a specific folder type “is: unread in: foldername” without the quotes, and substitute in the name of your folder in for the folder name.
The same process works for viewing flagged emails, just replace “unread” with “flagged”.
More info on searching can be found here: http://wiki.zimbra.com/index.php?title=Search_Tips