man GNUMail (Commandes) - a full featured mail application
NAME
gnumail - a full featured mail application
SYNOPSIS
gnumail
DESCRIPTION
gnumail (GNUMail.app) is a fully featured mail application running on Linux (or FreeBSD, OpenBSD, etc) and Apple Mac OS X. It uses the GNUstep development framework or Apple Cocoa, 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.
BUGS
An GNUstep conformant window manager should be used.