Mozilla Public License
Enigmail is copyrighted by its authors, open source and free software. It is primarily licensed under the terms of the Mozilla Public License, version 1.1.
GNU General Public License
In addition to the above, and upon your option, Enigmail is also licensed under the terms of the GNU General Public License (GPL), version 2.0 or later.
Obtaining the Source Code
The source code is publicly available for download.
