Mozilla Thunderbird is a full-fledged email and newsgroup reader client built using the core features of the popular Mozilla browser, and which can be used in conjunction with any web browser. The program has customizable panels, a simple user interface and advanced management capabilities.
The main distinctive features of Thunderbird, according to the developers, are the means to combat harmful emails, the ability to flexibly configure and organize the user interface, a powerful security system, support for a large number of functions, and the ability to connect extensions to add functionality.
