Version: 1.10 (using KDE 4.1.1) OS: Linux Installed from: Ubuntu Packages I manually set up a search folder to find all unread messages, which is a really useful feature to have. The problem is that, as soon as a message is clicked, it disappears as it changes status to read. If the status could remain unread until the message is deselected, then this feature would work (i.e. like outlook 2003). I think this may have been implemented in KDE3, but I'm new to KDE, and gone straight into KDE4.1.
KMail 4.10.1 has an unread mail filter.