Mozilla Thunderbird is a redesign of the Mozilla mail component. The goal is to produce a cross platform stand alone mail application using the XUL user interface language. The intended customer is someone who uses Mozilla Firebird (or another stand alone browser) as their primary browser and wants a mail client based on mozilla that "plays nice" with the browser.

Download for Windows
Download for Linux with GTK2 and XFT
Download for Mac OS X
View Release Notes
News source Wonderboard.de