Official press release covering the launch of version 1.0.

Messages about bugs, features, builds, and the program in general.

Interview with David Bienvenu about the 1.0 release.

Goal is to produce a cross platform stand alone mail application using the XUL user interface language.

Weblog about developments in the nightly builds.

Weekly developments in Mozilla Thunderbird builds.

Official site. Open source cross-platform email and Usenet client based on Mozilla code. Features intelligent spam filters, built-in RSS reader, and quick search.

Extensions are small add-ons that add new functionality to Thunderbird.

Feature descriptions, tips and tricks, news, extensions and themes.

Themes are skins that allow you to change the look and feel of the browser and personalize it.