Remember that cool app ReMail?
Neither did I! When I first heard about it was already gone from the AppStore and no where to be found!
Soon after Google acquired the app it went opensource under the Apache License. Well, the code project is hosted (of course) by google and the link is bellow.
ReMail Project @ googlecode
I compiled against the 3.0 using xcode 3.2.1. Here is the compiled app ReMail.app