Mozilla Thunderbird is the most popular open source email / news-feed client. It is free and available for all operating systems such as Windows, Mac OS X (Leopard, Lion..) and Linux based OS such as Ubuntu 10.10, 11.04, 11.10.
A whopping two years at its second major release, Mozilla's popular desktop email client Thunderbird is now available as the new and improved Thunderbird 3.0, and there's a lot to love in the new Thunderbird.
Mozilla officially released the Mozilla Thunderbird 17.0 for Linux, an email and RSS client, featuring an impressive number of changes and updates. The updates for Thunderbird are not usually this numerous, but Mozilla has taken this opportunity to repair a large number of problems and to plug a few security holes. ... (read more)