Version: (using KDE 4.2.2) Installed from: Gentoo Packages or provide a option in the search/filter options to search for unread messages in a folder+subfolders in order to have a possibility to mark all messages as read. Every time I change my client its annoying to have already read messages popping up a unread.... and clicking on every folder is here no option since I have a lot of them. This was asked very often since 2006 with weird solutions to workaround. Still no go :-(
*** This bug has been marked as a duplicate of bug 73846 ***