Sylpheed-Claws - the email client that bites!
Sylpheed-Claws is an email client (and news reader), based on GTK+, featuring
Graceful, and sophisticated interface
Easy configuration, intuitive operation
The appearance and interface are designed to be familiar to new users coming from other popular email clients, as well as experienced users. Almost all commands are accessible with the keyboard.
The messages are managed in the standard MH format, which features fast access and data security. You'll be able to import your emails from almost any other email client, and export them just as easily.
Sylpheed-Claws is distributed under the GPL.
Sylpheed-Claws started as the bleeding-edge version of Sylpheed, in order to act as a testbed for new features for Sylpheed. The idea was to regularly resync with Hiroyuki's main branch, and vice-versa. Sylpheed-Claws then evolved into the stable extended version of Sylpheed, and is now an entity in its own right, mainly due to different goals and the fact that syncing both codebases doesn't happen anymore.