Download Thunderbird 5.0 Beta 1

Mozilla Thunderbird is a free, open source e-mail and news client and feed reader developed by the Mozilla Foundation. Thunderbird has IMAP/POP support, support for HTML mail, powerful quick search, saved search folders, advanced message filtering, message grouping, labels, return receipts, smart address book LDAP address completion, import tools, and the ability to manage multiple e-mail and newsgroup accounts.

Some excellent features of Thunderbird are Tabbed email, An Archive, Smart folders.

Homepage: Mozilla Thunderbird
Type: E-mail client, news client and feed reader
License: MPL/GPL/LGPL
Written in: C++, XUL, XBL, JavaScript, CSS
Operating system: Cross-platform
Languages: 52
Size(Windows): 13.42 MB

Download: Windows, Mirror | Mac OS X, Mirror

Support: Click Here

Bugs fix's in this version:

* New Addons Manager and extension management API (user interface will be changed before final release)
* Tabs can now be reordered and dragged to different windows
* Revised account creation wizard, offering improved set-up
* Attachment sizes now displayed along with attachments
* New troubleshooting information page to aid supporting and diagnosing problems in Thunderbird
* Plugins can now be loaded in RSS feeds by default
* Various other user interface fixes and improvements
* Support for Mac 32/64 bit Universal builds (Thunderbird Beta will no longer support PowerPC on Mac)
* and numerous other bug fixes