This is the source code for the GPG plugin for OS X's Mail.app.
The latest version of the plugin can be found on our official Homepage http://www.gpgtools.org/gpgmail.html.
The project is currently in a heavy state of development. For the latest news and updates check our Twitter http://twitter.com/gpgtools.
For instructions on how to build the code and further information have a look at the wiki: http://wiki.github.com/gpgtools/GPGMail/.