Mozilla has released Beta 4 version of Thunderbird 3 desktop email client. This beta version includes many improvements and bug fixes, which make it more sustainable and stable.

A few improvements of Thunderbird 3 Beta 4 are as follows:

• Based on the Gecko 1.9.1.3
• Improved performance, web compatibility
• New search with advanced filtering tools
• New global search field with autocomplete
• Redesigned mail toolbar
• New message summary view
• Improved address book
• Improved Gmail integration & many more

Mozilla provides Thunderbird 3 Beta 4 for Windows, Linux, and Mac OS X in a variety of languages.

Download Thunderbird 3 Beta 4