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.

Changelog:

• Multi-threading was introduced. This will reduce the situation where user actions are blocked.
  (can be disabled by --disable-threads configure option)
• Win32: network connection runs on another thread now to prevent blocking of the user interface.
• Execution of external commands (such as bsfilter) on filtering will not block the user interface anymore.
• The major part of IMAP protocol communication runs on another thread to prevent blocking of the user interface.
• The query search is executed on another thread.
• LibSylph is (almost) thread-safe now.
• Summary caches are updated on the fly (on receive/move/copy/delete). This improves the performance of opening folders with many new messages.
• Progress is displayed while scanning folders.
• The user interface of address book was rewritten using the new API (GtkTreeView). This will reduce the glitches in the older versions.
• Included Sylpheed FAQ (English) was updated.
• Some bugfixes are made.

Program Information Category: Tools and Utilities Type: Free Version: 3.0 Beta 1 Size: 6.05MB Works on: Windows Product page: here