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Mozilla Thunderbird

Mozilla Thunderbird
Mozilla Thunderbird logo.png
Thunderbird 17 on Ubuntu.png
Mozilla Thunderbird 17.0 on Ubuntu
Developer(s) Mozilla Foundation (formerly Mozilla Messaging)
Initial release July 28, 2003; 13 years ago (2003-07-28)
Stable release 45.7.1 (February 7, 2017; 10 days ago (2017-02-07))
Preview release 52.0beta (January 27, 2017; 21 days ago (2017-01-27))
Repository hg.mozilla.org/comm-central
Written in C, C++, JavaScript,CSS,XUL, XBL
Operating system Windows XP SP2 or later; OS X 10.6 or later; Linux
Size 25 MiB
Available in 53 languages
Type Email client, news client, feed reader
License MPL
Website mozilla.org/thunderbird

Mozilla Thunderbird is a free,open source, cross-platform email, news, RSS, and chat client developed by the Mozilla Foundation. The project strategy was modeled after that of the Mozilla Firefox web browser.

On December 7, 2004, version 1.0 was released, and received more than 500,000 downloads in its first three days of release, and 1,000,000 in 10 days.

On July 6, 2012, Mozilla announced the company was dropping the priority of Thunderbird development because the continuous effort to extend Thunderbird's feature set was mostly fruitless. The new development model shifted to Mozilla offering only "Extended Support Releases", which deliver security and maintenance updates, while allowing the community to take over the development of new features.

On December 1, 2015, Mozilla Executive Chair Mitchell Baker announced in a company-wide memo that Thunderbird development needs to be uncoupled from Firefox. She referred to Thunderbird developers spending large efforts responding to changes to Mozilla technologies, while Firefox was paying a tax to support Thunderbird development. She also said that she does not believe Thunderbird has the potential for "industry-wide impact" that Firefox does. At the same time, it was announced that Mozilla Foundation will provide at least a temporary legal and financial home for the Thunderbird project.

Thunderbird is an email, newsgroup, news feed, and chat (XMPP, IRC, Twitter) client. The vanilla version was not originally a personal information manager, although the Mozilla Lightning extension, which is now installed by default, adds PIM functionality. Additional features, if needed, are often available via other extensions.


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