Gnome Gmail is software which adds support for Gmail to the Linux Gnome Desktop. It allows Gmail to be selected as the default mail application for the desktop. Unlike other solutions on the net, Gnome Gmail supports "To:", "Subject:", "body", "CC:", and "BCC: fields, and is available in deb and rpm format.
Developer resources are available at the Gnome Gmail developer page. In particular, translation assistance is needed for the Gnome application XML file.
Upstream Credits
This is derived from the gnome-gmail shell script, written by Matthew C Ruschmann, who in turn adapted from ymail, by David L Norris.