Thunderbird makes emailing safer, faster, and easier than ever before with the industry's best implementations of features such as intelligent spam filters, built-in RSS reader, quick search, and much more.

What's new in Thunderbird 1.5.0.2:

* Improvements to product stability.
* Several security fixes.
* 1.5.0.2 does not include Universal Binary support for Mac OS X.

http://mozilla.osuosl.org/pub/mozilla.org/...p%201.5.0.2.exe