KMail "Wow"
Szymon Stefanek's KMail GSoC project was merged into trunk today.
Stunning. You've got to try it. KMail has been re-launched!
r881321
To quote the commit message: "... New features include grouping, multiline items and the ability to customize just about everything of the look of the message list. Also, we have a tabbed interface for opening more than one folder at once now..."
Fantastic work Szymon and Thomas.