May 26, 2018
GNUstep mail client
GNUMail.app is a clone of NeXT’s excellent Mail.app application. It uses the GNUstep development framework, which is based on the OpenStep specification provided by NeXT, Inc.. GNUMail.app is licensed under the GPL, and the full sources of the application are available.
GNUMail.app was written mostly from scratch though it does use some code from elm and mpack/munpack.
LICENSE GPL2 or later