Mozilla Thunderbird 5 Final was released yesterday, the new release delivers faster performance, safer email experience, and new add-ons manager.

The latest version of Thunderbird has the following changes:

  • More responsive and faster to start up and use
  • Thunderbird is based on the new Mozilla Gecko 5 engine
  • New Add-ons Manager
  • Revised account creation wizard to improve email setup
  • New Troubleshooting Information page
  • Tabs can now be reordered and dragged to different windows
  • Attachment sizes now displayed along with attachments
  • Plugins can now be loaded in RSS feeds by default
  • There are several theme fixes for Windows Vista and Windows 7
  • Support for Mac 32/64 bit Universal builds (Thunderbird no longer supports PowerPC on Mac)
  • Over 390 platform fixes that improve speed, performance, stability and security



Ubuntu 10.04/10.10/11.04 user can install or upgrade from thunderbird-stable ppa

sudo apt-add-repository ppa:mozillateam/thunderbird-stable
sudo apt-get update
sudo apt-get install thunderbird

Release Notes:
Source Code: