Thunderbird 1.5 Beta 1 is out!

Changelog for previous release (Thunderbird 1.1 Alpha 2)
Changelogs for other releases

Last updated 12 Sep 05.

Mozilla Thunderbird 1.5 Beta 1 has been released with even more bugfixes and improvements over 1.1 Alpha 2. Note that it is still only a beta release and bugs are expected to be present.

New Features & Improvements over Thunderbird 1.0.x:

  • 269483: Automated update to streamline and improve product upgrades and/or extensions.
  • 240600278310, 278312: Spell check as you type.
  • 282500: Built in phishing detector.
  • 282174: Podcasting and other RSS Improvements.
  • 2920, 288273, 298860: Deleting attachments from messages.
  • 290237: Support for server side spam filtering.
  • 298969: Ability to create message filter actions for forwarding and replying (with a template).
  • 303160: Kerberos authentication.
  • 16360: Auto save as draft for mail composition.
  • 262626,284144: Improvements to product usability including redesigned options UI, and SMTP server management.
  • 258102: OPML import support
  • 283735, 297804: Export RSS feeds to OPML format
  • 242959, 261559: Support for .eml file type association
  • 256545, 297360: Improved user interface for building up search criteria
  • 289091: Improved processing of return receipts for IMAP users
  • 189363: Support for network timeouts
  • Many other security enhancements
  • Miscellaneous bugfixes

Windows builds: Official Windows installer (discussion)

Linux builds: Official Linux (i686)

Mac builds: Official Mac