Mozilla Thunderbird is a fast and very functional GUI mail client. It features excellent online/offline mail reading, IMAP, POP and local mail transfer protocols, security with X.509 and GPG key management, and a plethora of extensions.
Thunderbird follows in the tradition of Mozilla Firefox. It is a focused, lightweight mail client with very good extensibility through the Mozilla extension mechanism.
Thunderbird is widely localised and available in many languages.
All packages Packages in Distributions
“thunderbird-locales” source package in Lucid
Version 1:3.1.7ubuntu0.10.04.1 uploaded on 2011-01-20
“thunderbird” source package in Trusty
Version 1:24.4.0+build1-0ubuntu1 uploaded on 2014-03-17
“thunderbird” source package in Saucy
Version 1:24.4.0+build1-0ubuntu0.13.10.2 uploaded on 2014-03-18
“thunderbird” source package in Raring
Version 1:24.2.0+build1-0ubuntu0.13.04.1 uploaded on 2013-12-06
“thunderbird” source package in Quantal
Version 1:24.4.0+build1-0ubuntu0.12.10.1 uploaded on 2014-03-18