Hello Linux Geeksters. As you may know, Thunderbird is developed by Mozilla, but unlike Firefox, which gets constant updates and receives new features, it does only receives security fixes, due to the fact that Mozilla does not see a future for their e-mail client.
Most likely, Mozilla Thunderbird is the most popular e-mail client on Linux and Unix systems, despite the fact that there are other clients that get updates more often, but lack a lot of features, in comparison with Mozilla’s one.
Being neglected by Mozilla, many third party developers from the onlie community have contributed with code for Thunderbird, new features being added.
From September 2008 to January 2015, the Thunderbird usage has rose from 4 million users to over 9 million users, as the below chart from the Thunderbird blog shows.
The top 5 countries that use Thunderbird are Germany, Japan, United States, France, Italy.
If you want to install the latest version of Thunderbird on your Linux system, follow the instructions from this article.