Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client (mailer, MUA).

Sylpheed runs on Unix-like systems such as Linux, BSD, and Mac OS X. It also supports Windows. Sylpheed uses GTK+ GUI toolkit. The newest version of Sylpheed works with GTK+ 2.4 or later (2.6 or later is recommended). Sylpheed is a free software distributed under the GNU GPL (the library part is GNU LGPL). You can freely use, modify and redistribute it under the license.

Features:

* Simple, beautiful, and well-polished user interface
* Comfortable operationality which is built in detail
* Well-organized, easy-to-understand configuration
* Lightweight operation
* High reliability
* Internationalization and Multilingualization support
* High-level Japanese processing
* Various protocols support
* Security features (GnuPG, SSL/TLSv1)
* Powerful filtering and search
* Junk mail control
* Flexible cooperation with external commands

What's new:

* The bug that 'Set display item of summary...' button in the common preferences dialog always show send folder setting was fixed.
* The previous focus is kept when separation of view is changed.
* The status label is automatically resized now when there is not enough width.
* The bug that virtual folders were not sorted properly was fixed.
* The crash when trying to use ascii-armored PGP encryption was fixed.
* The most of compiler warnings were removed.