sylpheed-claws-gtk2 2.6.0-1.1ubuntu1.1~dapper1 (amd64 binary) in ubuntu dapper

 Sylpheed-Claws GTK2 is the GTK2 version of the Sylpheed-Claws
 mail client, which is itself the extended version of the
 Sylpheed mail client. It aims to have the features that
 Sylpheed-Claws has and more, with a GTK2 interface.
 It is also extensible using loadable plugins, which can provide
 support for additional features, like other storage formats,
 feeds reader, calendar management, mail filtering, etc.