Thunderbird is a free, open source, cross-platform e-mail and news client. The project strategy is modeled after Mozilla Firefox.
Advantages compared with the most popular web e-mail application:
(a) Excellent Mail-Filter Management, filters can be sorted;
(b) E-Mails can be saved as txt-files;
(c) Pictures/screenshots can be pasted directly from the clipboard in new mails without storing+loading again from harddisk.
Automated signature features, if using more than one sender e-mail addresses.
On December 7, 2004, version 1.0 was released, and received over 500,000 downloads in its first three days of release, and 1,000,000 in 10 days.
Available also as portable app: http://portableapps.com/apps
