GPGMail is a plugin for OS X's Mail.app, which let's you
send
and receive secure, OpenPGP encrypted and signed messages.
The latest releases of GPGMail can be found on our official website http://www.gpgtools.org/gpgmail/index.html.
The project is currently in a heavy state of development. For the latest news and updates check our Twitter http://twitter.com/gpgtools
Building is as easy a make command.
git clone --recursive https://github.com/GPGTools/GPGMail.git -b dev
cd GPGMail
make update-libmacgpg && CONFIG=Debug make
Enjoy your custom GPGMail.