Expression Search / GMailUIExpression Search / G M a i l U I is an extension to Thunderbird (versions 5+) which add powerful message searching features. Originally written by Ken Mixter. Type "from:fred to:tom attachment:yes" to see all messages from Fred to Tom in the current view that have an attachment. Press Ctrl+Enter to have this search apply to all folders. More search operators can be view at here. Also support Ctrl
