gtkmail is a GUI email client for GNOME. It features full MIME support, multiple remote and local mailboxes, threaded mail viewing, mail fetching, crypto (PGP/SSL), and a multiwindow interface.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.