WPF on steroids - Outlook clone
Two engineer from the Switzerland branch of Microsoft Ronnie Saurenmann and Ruihua Jin developed an Outlook clone using WPF, XAML, Expression Blend etc.
The online demonstration(XPAB) is available at this url. Check out the 90 pages tutorial about how you can develop an application similar to MS Outlook(be sure to download the project files).

14. September 2011 at 14:55
WPF on steroids, huh? If I were to make my own Outlook, Iād make it more like a Gmail type of application. Simple yet very much functional.