Sylpheed   - lightweight and user-friendly e-mail client -

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

Sylpheed provides intuitive user-interface. Sylpheed is also designed for keyboard-oriented operation, so Sylpheed can be widely used from beginners to power users.

Sylpheed runs on many systems such as Windows, Linux, BSD, Mac OS X and other Unix-like systems.

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.

Sylpheed has the following 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 with one-mail-corresponding-to-one-file format
  • Extensibility by plug-in faculty
  • Powerful filtering and search
  • Junk mail control
  • Security features (GnuPG, SSL/TLSv1)
  • Various protocols support
  • Internationalization and Multilingualization support
  • High-level Japanese processing
  • Flexible cooperation with external commands