History of Mozilla Thunderbird

Mozilla Thunderbird was originally launched as Minotaur, shortly after Phoenix (the original name for Mozilla Firefox); the project failed to gain momentum. With the success of the Mozilla Firefox, however, demand increased for a mail client to go with it, and the work on Minotaur was revived under the new name of Thunderbird, and migrated to the new toolkit developed by the Firefox team.

Early beginnings: A simple email and news client

Various logos used during the development of Thunderbird

Significant work on Thunderbird restarted with the announcement that from version 1.5 onwards, the main Mozilla suite would be designed around separate applications using this new toolkit. This contrasts with the previous all-in-one approach, and will hopefully lead to more efficient and maintainable code, as well as allowing users to mix and match the Mozilla applications with alternatives.

The original Thunderbird logo was just a modified Firebird logo, with a simple shifting of hue value from red to blue. In 2004, together with the change of Firefox's visual identity by Jon Hicks, a more professional logo that is currently in use was introduced.

Release history

Color chart

Colour	Meaning
Red	Former release; no longer supported
Pink	Former test release
Yellow	Former release; still supported
Green	Current supported release
Blue	Future release
Gold	Current test release
Purple	Future test release

Current supported releases

Thunderbird 45.0

Current test releases^[1]

Thunderbird 45 Beta

Thunderbird 47 Earlybird

Thunderbird 48 Daily

Name	Gecko version	Version	Codename	Release date[1]	Significant changes
Thunderbird	1.5	0.1		July 28, 2003	First release.[2]
		0.2		September 3, 2003	[3]
		0.3		October 17, 2003	[4]
	1.6	0.4		December 7, 2003	[5]
		0.5		February 9, 2004	[6]
	1.7	0.6		May 3, 2004	Pinstripe theme for Mac OS X, Windows installer, better junk mail handling, IMAP IDLE and LDAP version 3 support.[7]
		0.7		June 16, 2004	Smaller download size, improved IMAP support, updated extension and theme managers.[8]
		0.7.1		June 28, 2004	Bugfix release.
		0.7.2		July 8, 2004	Vulnerability patch (Windows only).
		0.7.3		August 4, 2004	Vulnerability patch.[9]
		0.8		September 14, 2004	Improved Privacy Controls, Global Inbox, RSS/Atom Integration, Improved data migration. Improved spell checker support.[10]
		0.9		November 3, 2004	More RSS integration. Favorite folders. Menu and dialog polish. Message list groups. Virtual folders.[11]
Thunderbird 1		1.0 RC1	Thunderbird 1.0 Release Candidate 1	December 1, 2004	First Thunderbird release candidate. Bug fixing. Improved theme. Polish work.[12]
		1.0	Thunderbird 1.0	December 7, 2004	Official version 1.0 release.[13]
		1.0.2[lower-roman 1]		March 21, 2005	Security and stability update.[14]
		1.0.5[lower-roman 2]		July 13, 2005	Security and stability update.[15]
		1.0.6		July 19, 2005	Stability update.[16]
		1.0.7		September 29, 2005	Security and stability update.[17]
		1.0.8		April 21, 2006	Security and stability update.[18] End-of-life 1.0.x product line
Thunderbird 1.5	1.8	1.1a1	Thunderbird 1.1 Alpha 1	June 2, 2005	First Thunderbird 1.1 alpha release. Stability improvement and security fixes.[19]
		1.1a2	Thunderbird 1.1 Alpha 2	July 15, 2005	Second Thunderbird 1.1 alpha release.[20]
		1.5b1	Thunderbird 1.5 Beta 1	September 9, 2005	First Thunderbird 1.5 beta release. New update system (binary patch).[21]
		1.5b2	Thunderbird 1.5 Beta 2	October 7, 2005	Second Thunderbird 1.5 beta release. Improvements to automated update system, website rendering and performance. Several security fixes.[22]
		1.5 RC1	Thunderbird 1.5 Release Candidate 1	November 5, 2005	First Thunderbird 1.5 release candidate.[23]
		1.5 RC2	Thunderbird 1.5 Release Candidate 2	December 21, 2005	Second Thunderbird 1.5 release candidate.[24]
		1.5	Thunderbird 1.5	January 11, 2006	Official version 1.5 release. Identical to 1.5 RC2.[25]
		1.5.0.2[lower-roman 1]		April 21, 2006	Security and stability update.[26]
		1.5.0.4[lower-roman 1]		June 1, 2006	Security and stability update. Native support for Intel-based Macintosh computers by shipping universal binary.[27]
		1.5.0.5		July 27, 2006	Security and stability update.[28]
		1.5.0.7[lower-roman 1]		September 14, 2006	Security and stability update.[29]
		1.5.0.8		November 8, 2006	Security and stability update.[30]
		1.5.0.9		December 19, 2006	Security and stability update.[31]
		1.5.0.10		March 1, 2007	Security and stability update.[32]
		1.5.0.12[lower-roman 1]		May 30, 2007	Security and stability update.[33]
		1.5.0.13		August 23, 2007	Security and stability update.[34]
		1.5.0.14		December 19, 2007	Security and stability update.[35] End-of-life 1.5.0.x product line
Thunderbird 2	1.8.1	2.0a1	Thunderbird 2.0 Alpha 1	July 28, 2006	First Thunderbird 2 alpha release. Message Tags. Folder Views including favorite folders. Improved new mail notification alerts. New Windows installer based on Nullsoft Scriptable Install System. Find As You Type in the message pane. New combined and improved Add-ons manager for extensions and themes. Updates to the extension system to provide enhanced security and to allow for easier localization of extensions.[36]
		2.0b1	Thunderbird 2.0 Beta 1	December 12, 2006	First Thunderbird 2 beta release. Improved theme. Session history navigation. Improved offline management. Folder summary popups. Improved performance in saved search folders. Improved filing tools.[37]
		2.0b2	Thunderbird 2.0 Beta 2	January 23, 2007	Second Thunderbird 2 beta release.[38]
		2.0 RC1	Thunderbird 2.0 Release Candidate 1	April 6, 2007	First Thunderbird 2 release candidate.[39]
		2.0	Thunderbird 2.0	April 18, 2007	Official version 2.0 release. Identical to 2.0 RC1. Windows Vista support, message tags, new visual theme, improved extension support, improved new email notifications, folder summary pop-ups, find text in messages search tool, new Windows installer, easy access to popular email services, advanced folder views, session history navigation, and saved search folder performance.[40]
		2.0.0.4[lower-roman 2]		June 14, 2007	Security and stability update. Korean locale was added.[41]
		2.0.0.5		July 19, 2007	Security and stability update.[42]
		2.0.0.6		August 1, 2007	Security and stability update.[43]
		2.0.0.9[lower-roman 2]		November 14, 2007	Security and stability update. Hebrew locale was added.[44]
		2.0.0.12[lower-roman 2]		February 26, 2008	Security and stability update. Afrikaans and Ukrainian locales were added.[45]
		2.0.0.14		May 1, 2008	Security and stability update. Includes fixes that would have been part of Thunderbird 2.0.0.13 which was officially abandoned on April 14, 2008.[46]
		2.0.0.16		July 23, 2008	Security and stability update. Replacement for Thunderbird 2.0.0.15 which was officially abandoned on June 27, 2008.[47]
		2.0.0.17		September 25, 2008	Security and stability update.[48]
		2.0.0.18		November 19, 2008	Security and stability update.[49]
		2.0.0.19		December 30, 2008	Security and stability update. Shipped with equivalent fixes to Firefox 2.0.0.20.[50]
		2.0.0.21[lower-roman 1]		March 18, 2009	Security and stability update.[51]
		2.0.0.22		June 22, 2009	Security and stability update.[52]
		2.0.0.23		August 20, 2009	Security and stability update.[53]
		2.0.0.24		March 15, 2010	Security and stability update.[54] End-of-life 2.0.0.x product line
Thunderbird 3	1.9	3.0a1	Shredder Alpha 1	May 13, 2008	First Thunderbird 3 alpha release.[55]
		3.0a2	Shredder Alpha 2	August 12, 2008	Second Thunderbird 3 alpha release.[56]
	1.9.1	3.0a3	Shredder Alpha 3	October 14, 2008	Third Thunderbird 3 alpha release.[57]
		3.0b1	Thunderbird 3.0 Beta 1	December 9, 2008	First Thunderbird 3 beta release.[58]
		3.0b2	Thunderbird 3.0 Beta 2	February 26, 2009	Second Thunderbird 3 beta release.[59]
		3.0b3	Thunderbird 3.0 Beta 3	July 21, 2009	Third Thunderbird 3 beta release. Major features added, theme redesigns.[60]
		3.0b4	Thunderbird 3.0 Beta 4	September 22, 2009	Fourth Thunderbird 3 beta release. New Gloda search functionality enabled.[61]
		3.0 RC1	Thunderbird 3.0 Release Candidate 1	November 24, 2009	First Thunderbird 3 release candidate.[62]
		3.0 RC2	Thunderbird 3.0 Release Candidate 2	December 1, 2009	Second Thunderbird 3 release candidate.[63]
		3.0	Thunderbird 3.0	December 8, 2009	Official version 3.0 release.[64]
		3.0.1		January 20, 2010	Regular security and stability update.[65]
		3.0.2		February 25, 2010	Regular security and stability update.[66]
		3.0.3		March 1, 2010	Off-cycle stability update. Fix for missing folders or empty folder panel after updating to Thunderbird 3.0.2.[67]
		3.0.4		March 30, 2010	Regular security and stability update.[68]
		3.0.5		June 17, 2010	Off-cycle stability update. Improves the performance of indexing messages and accessing profiles stored on a network as well as the unread email notification on Mac OS X. Several fixes to the user interface.[69]
		3.0.6		July 20, 2010	Regular security and stability update.[70]
		3.0.7		September 7, 2010	Regular security and stability update.[71]
		3.0.8		September 16, 2010	Off-cycle stability update.[72]
		3.0.9		October 19, 2010	Regular security and stability update.[73]
		3.0.10		October 27, 2010	Off-cycle security update.[74]
		3.0.11		December 9, 2010	Regular security and stability update.[75] End-of-life 3.0.x product line
Thunderbird 3.1	1.9.2	3.1a1	Lanikai Alpha 1	February 3, 2010	First Thunderbird 3.1 alpha release.[76]
		3.1b1	Thunderbird 3.1 Beta 1	March 10, 2010	First Thunderbird 3.1 beta release.[77]
		3.1b2	Thunderbird 3.1 Beta 2	May 5, 2010	Second Thunderbird 3.1 beta release.[78]
		3.1 RC1	Thunderbird 3.1 Release Candidate 1	May 27, 2010	First Thunderbird 3.1 release candidate.[79]
		3.1 RC2	Thunderbird 3.1 Release Candidate 2	June 9, 2010	Second Thunderbird 3.1 release candidate.[80]
		3.1	Thunderbird 3.1	June 24, 2010	Official version 3.1 release.[81]
		3.1.1		July 20, 2010	Regular security and stability update.[82]
		3.1.2		August 5, 2010	Off-cycle stability update.[83]
		3.1.3		September 7, 2010	Regular security and stability update.[84]
		3.1.4		September 16, 2010	Off-cycle stability update.[85]
		3.1.5		October 19, 2010	Regular security and stability update.[86]
		3.1.6		October 27, 2010	Off-cycle security update.[87]
		3.1.7		December 9, 2010	Regular security and stability update.[88]
		3.1.8		March 1, 2011	Regular security and stability update.[89]
		3.1.9		March 4, 2011	Off-cycle stability update. Fixed post-update crash affecting some users.[90]
		3.1.10		April 28, 2011	Regular security and stability update.[91]
		3.1.11		June 21, 2011	Regular security and stability update.[92]
		3.1.12		August 16, 2011	Regular security and stability update.[93]
		3.1.13		August 31, 2011	Off-cycle security update.[94]
		3.1.14		September 6, 2011	Off-cycle security update.[95]
		3.1.15		September 27, 2011	Regular security and stability update.[96]
		3.1.16		November 8, 2011	Regular security and stability update.[97]
		3.1.17		December 20, 2011	Regular security and stability update.[98]
		3.1.18		January 31, 2012	Regular security and stability update.[99]
		3.1.19		February 16, 2012	Regular security and stability update.[100]
		3.1.20		March 12, 2012	Regular security and stability update.[101] End-of-life 3.1.x product line on April 24, 2012.
Thunderbird 5	2.0	3.3a1	Miramar Alpha 1	November 23, 2010	First Thunderbird 3.3 alpha release.[102]
		3.3a2	Miramar Alpha 2	January 20, 2011	Second Thunderbird 3.3 alpha release.[103]
		3.3a3	Miramar Alpha 3	March 15, 2011	Third Thunderbird 3.3 alpha release.[104]
	5.0	5.0b1	Thunderbird 5.0 Beta 1	June 2, 2011	First Thunderbird 5.0 beta release.[105]
		5.0b2	Thunderbird 5.0 Beta 2	June 22, 2011	Second Thunderbird 5.0 beta release.[106]
		5.0	Thunderbird 5.0	June 28, 2011	New features including Add-ons Manager, New Troubleshooting Information page; Revised account creation wizard, Tabs can now be reordered and dragged to different windows, Attachment sizes now displayed along with attachments, Plugins can now be loaded in RSS feeds by default; Over 390 platform fixes that improve speed, performance, stability and security, including improved responsiveness and faster start-up, theme fixes for Windows Vista and Windows 7, and support for Mac 32/64 bit Universal builds; End of Support for PowerPC-based Apple Computers.[107] End-of-life 5.0.x product line on August 16, 2011.
Thunderbird 6	6.0	6.0a2	Thunderbird 6.0 Earlybird	June 16, 2011	First Thunderbird 6.0 Earlybird build.[108]
		6.0b1	Thunderbird 6.0 Beta 1	July 20, 2011	First Thunderbird 6.0 beta release.[109][110]
		6.0b2	Thunderbird 6.0 Beta 2	August 2, 2011	Second Thunderbird 6.0 beta release.[111]
		6.0b3	Thunderbird 6.0 Beta 3	August 10, 2011	Third Thunderbird 6.0 beta release.[112]
		6.0	Thunderbird 6.0	August 16, 2011	Based on Gecko 6 engine as well as fixes to user interview and security; platform fixes that improve speed, performance and stability; Windows 7 support adds jump lists and includes several theme improvements; fixes to improve importing email from Microsoft Outlook; for Linux, default mail client check works with newer distributions[113][114]
		6.0.1	Thunderbird 6.0.1	August 31, 2011	Off-cycle security update.[115]
		6.0.2	Thunderbird 6.0.2	September 6, 2011	Off-cycle security update.[116] End-of-life 6.0.x product line on September 27, 2011.
Thunderbird 7	7.0	7.0a1	Thunderbird 7.0 Nightly	May 27, 2011	First Thunderbird 7.0 Nightly build.[117]
		7.0a2	Thunderbird 7.0 Earlybird	July 6, 2011	First Thunderbird 7.0 Earlybird build.[118]
		7.0b1	Thunderbird 7.0 Beta 1	August 26, 2011	First Thunderbird 7.0 beta release.[119][120]
		7.0b2	Thunderbird 7.0 Beta 2	September 6, 2011	Second Thunderbird 7.0 beta release.[121]
		7.0b3	Thunderbird 7.0 Beta 3	September 20, 2011	Third Thunderbird 7.0 beta release.[122]
		7.0	Thunderbird 7.0	September 27, 2011	Based on Gecko 7 engine as well as fixes to user interview and security; support for printing summary of selected email messages; fixes to attachment handling; platform-specific improvements to Address Book[123][124]
		7.0.1	Thunderbird 7.0.1	September 30, 2011	Off-cycle stability update. Fixed a rare issue where some users could find one or more of their add-ons hidden after a Thunderbird update.[125][126] End-of-life 7.0.x product line on November 8, 2011.
Thunderbird 8	8.0	8.0a1	Thunderbird 8.0 Nightly	July 6, 2011	First Thunderbird 8.0 Nightly build.[127]
		8.0a2	Thunderbird 8.0 Earlybird	August 17, 2011	First Thunderbird 8.0 Earlybird build.[128]
		8.0b1	Thunderbird 8.0 Beta 1	October 4, 2011	First Thunderbird 8.0 beta release.[129][130]
		8.0b2	Thunderbird 8.0 Beta 2	October 12, 2011	Second Thunderbird 8.0 beta release.
		8.0b3	Thunderbird 8.0 Beta 3	October 19, 2011	Third Thunderbird 8.0 beta release.[131]
		8.0b4	Thunderbird 8.0 Beta 4	November 1, 2011	Fourth Thunderbird 8.0 beta release.
		8.0b5	Thunderbird 8.0 Beta 5	November 3, 2011	Fifth Thunderbird 8.0 beta release.
		8.0	Thunderbird 8.0	November 8, 2011	Based on Gecko 8 engine, with security and stability fixes; Add-ons installed by third parties now disabled by default; New Search and Find Shortcuts; Improved accessibility of the attachment list; Folder switching pane widget removed and repackaged as an add-on[132][133] End-of-life 8.0.x product line on December 20, 2011.
Thunderbird 9	9.0	9.0a1	Thunderbird 9.0 Nightly	August 17, 2011	First Thunderbird 9.0 Nightly build.[134]
		9.0a2	Thunderbird 9.0 Earlybird	September 28, 2011	First Thunderbird 9.0 Earlybird build.[135]
		9.0b1	Thunderbird 9.0 Beta 1	November 16, 2011	First Thunderbird 9.0 beta release.[136][137]
		9.0b2	Thunderbird 9.0 Beta 2	November 24, 2011	Second Thunderbird 9.0 beta release.
		9.0b3	Thunderbird 9.0 Beta 3	December 1, 2011	Third Thunderbird 9.0 beta release.
		9.0b4	Thunderbird 9.0 Beta 4	December 8, 2011	Fourth Thunderbird 9.0 beta release.
		9.0b5	Thunderbird 9.0 Beta 5	December 14, 2011	Fifth Thunderbird 9.0 beta release.
		9.0	Thunderbird 9.0	December 20, 2011	Based on Gecko 9 engine, with security and user interface improvements; New opt-in system for sharing performance and usability data with Mozilla ; Additional support for Personas in the compose and address book windows; Better keyboard handling for attachments; Windows users can hide the menu bar.[138][139]
		9.0.1	Thunderbird 9.0.1	December 23, 2011	Off-cycle security and stability update.[140] End-of-life 9.0.x product line on January 31, 2012.
Thunderbird 10	10.0	10.0a1	Thunderbird 10.0 Nightly	September 28, 2011	First Thunderbird 10.0 Nightly build.[141]
		10.0a2	Thunderbird 10.0 Earlybird	November 9, 2011	First Thunderbird 10.0 Earlybird build.[142]
		10.0b1	Thunderbird 10.0 Beta 1	December 23, 2011	First Thunderbird 10.0 beta release.[143][144]
		10.0b2	Thunderbird 10.0 Beta 2	January 9, 2012	Second Thunderbird 10.0 beta release.
		10.0b3	Thunderbird 10.0 Beta 3	January 11, 2012	Third Thunderbird 10.0 beta release.
		10.0b4	Thunderbird 10.0 Beta 4	January 18, 2012	Fourth Thunderbird 10.0 beta release.
		10.0b5	Thunderbird 10.0 Beta 5	January 24, 2012	Fifth Thunderbird 10.0 beta release.
		10.0	Thunderbird 10.0	January 31, 2012	Official version 10.0 release.[145][146] First Extended Support Release (ESR).[147]
		10.0.1	Thunderbird 10.0.1	February 12, 2012	Off-cycle security and stability update.[148]
		10.0.2	Thunderbird 10.0.2	February 16, 2012	Off-cycle security and stability update.[149]
		10.0.3esr	Thunderbird 10.0.3esr	March 13, 2012	Regular security and stability update.[150]
		10.0.4esr	Thunderbird 10.0.4esr	April 24, 2012	Regular security and stability update.[151]
		10.0.5esr	Thunderbird 10.0.5esr	June 6, 2012	Regular security and stability update.[152]
		10.0.6esr	Thunderbird 10.0.6esr	July 17, 2012	Regular security and stability update.[153]
		10.0.7esr	Thunderbird 10.0.7esr	August 28, 2012	Regular security and stability update.[154]
		10.0.8esr	Thunderbird 10.0.8esr	October 9, 2012	Regular security and stability update.[155]
		10.0.9esr	Thunderbird 10.0.9esr	October 12, 2012	Off-cycle security and stability update.[156]
		10.0.10esr	Thunderbird 10.0.10esr	October 29, 2012	Off-cycle security and stability update.[157]
		10.0.11esr	Thunderbird 10.0.11esr	November 20, 2012	Regular security and stability update.[158]
		10.0.12esr	Thunderbird 10.0.12esr	January 8, 2013	Regular security and stability update.[159] End-of-life 10.0.x product line on February 12, 2013.[160]
Thunderbird 11	11.0	11.0	Thunderbird 11.0	March 13, 2012	Official version 11.0 release.[161]
		11.0.1	Thunderbird 11.0.1	March 28, 2012	Off-cycle security and stability update.[162] End-of-life 11.0.x product line on April 24, 2012.
Thunderbird 12	12.0	12.0	Thunderbird 12.0	April 24, 2012	Official version 12.0 release.[163]
		12.0.1	Thunderbird 12.0.1	April 30, 2012	Off-cycle security and stability update.[164] End-of-life 12.0.x product line on June 5, 2012.
Thunderbird 13	13.0	13.0	Thunderbird 13.0	June 5, 2012	Official version 13.0 release.[165]
		13.0.1	Thunderbird 13.0.1	June 15, 2012	Off-cycle security and stability update.[166] End-of-life 13.0.x product line on July 17, 2012.
Thunderbird 14	14.0	14.0	Thunderbird 14.0	July 17, 2012	Official version 14.0 release.[167] End-of-life 14.0.x product line on August 28, 2012.
Thunderbird 15	15.0	15.0	Thunderbird 15.0	August 28, 2012	Official version 15.0 release.[168]
		15.0.1	Thunderbird 15.0.1	September 10, 2012	Off-cycle security and stability update.[169] End-of-life 15.0.x product line on October 9, 2012.
Thunderbird 16	16.0	16.0	Thunderbird 16.0	October 9, 2012	Official version 16.0 release.[170]
		16.0.1	Thunderbird 16.0.1	October 11, 2012	Off-cycle security and stability update.[171]
		16.0.2	Thunderbird 16.0.2	October 29, 2012	Off-cycle security and stability update.[172] End-of-life 16.0.x product line on November 20, 2012.
Thunderbird 17	17.0	17.0esr	Thunderbird 17.0esr	November 20, 2012	Official version 17.0esr release. [173] Second Extended Support Release (ESR).
		17.0.2esr	Thunderbird 17.0.2esr	January 8, 2013	Regular security and stability update.[174]
		17.0.3esr	Thunderbird 17.0.3esr	February 19, 2013	Regular security and stability update.[175]
		17.0.4esr	Thunderbird 17.0.4esr	March 11, 2013	Regular security and stability update.[176]
		17.0.5esr	Thunderbird 17.0.5esr	April 2, 2013	Regular security and stability update.[177]
		17.0.6esr	Thunderbird 17.0.6esr	May 14, 2013	Regular security and stability update.[178]
		17.0.7esr	Thunderbird 17.0.7esr	June 25, 2013	Regular security and stability update.[179]
		17.0.8esr	Thunderbird 17.0.8esr	August 6, 2013	Regular security and stability update.[180][181] End-of-life 17.0.x product line on December 3, 2013.[160]
		17.0.9esr	Thunderbird 17.0.9esr	September 17, 2013	Regular security and stability update.[182]
		17.0.10esr	Thunderbird 17.0.10esr	October 29, 2013	Regular security and stability update.[183]
		17.0.11esr	Thunderbird 17.0.11esr	November 19, 2013	Off-cycle security and stability update.[184]
Thunderbird 24	18.0[lower-roman 3]	18.0b1	Thunderbird 18.0 Beta 1	November 29, 2012	First Thunderbird 18.0 beta release.[186]
	19.0	19.0b1	Thunderbird 19.0 Beta 1	January 18, 2013	First Thunderbird 19.0 beta release.[187]
	20.0	20.0b1	Thunderbird 20.0 Beta 1	March 8, 2013	First Thunderbird 20.0 beta release.[188]
	21.0	21.0b1	Thunderbird 21.0 Beta 1	April 10, 2013	First Thunderbird 21.0 beta release.[189]
	22.0	22.0b1	Thunderbird 22.0 Beta 1	May 23, 2013	First Thunderbird 22.0 beta release.[190]
	23.0	23.0b1	Thunderbird 23.0 Beta 1	July 3, 2013	First Thunderbird 23.0 beta release.[191]
	24.0	24.0b1	Thunderbird 24.0 Beta 1	August 15, 2013	First Thunderbird 24.0 beta release (only US English).[192]
		24.0b2	Thunderbird 24.0 Beta 2	August 29, 2013	Second Thunderbird 24.0 beta release.
		24.0b3	Thunderbird 24.0 Beta 3	September 11, 2013	Third Thunderbird 24.0 beta release.
		24.0	Thunderbird 24.0	September 17, 2013	Official version 24.0 release.[193]
		24.0.1	Thunderbird 24.0.1	October 11, 2013	Security and stability update.[194]
		24.1.0	Thunderbird 24.1.0	October 29, 2013	Security and stability update.[195]
		24.1.1	Thunderbird 24.1.1	November 19, 2013	Security and stability update.[196]
		24.2.0	Thunderbird 24.2.0	December 10, 2013	Security and stability update.[197]
		24.3.0	Thunderbird 24.3.0	February 4, 2014	Security and stability update.[198]
		24.4.0	Thunderbird 24.4.0	March 18, 2014	Security and stability update.[199]
		24.5.0	Thunderbird 24.5.0	April 29, 2014	Security and stability update.[200]
		24.6.0	Thunderbird 24.6.0	June 10, 2014	Security and stability update.[201]
		24.7.0	Thunderbird 24.7.0	July 22, 2014	Security and stability update.[202]
		24.8.0	Thunderbird 24.8.0	September 2, 2014	Security and stability update.[203]
		24.8.1	Thunderbird 24.8.1	September 24, 2014	Security update.[204]
Thunderbird 31	25.0	25.0b1	Thunderbird 25.0 Beta 1	October 17, 2013	First Thunderbird 25.0 beta release.[205]
	26.0	26.0b1	Thunderbird 26.0 Beta 1	November 18, 2013	First Thunderbird 26.0 beta release.[206]
	27.0	27.0b1	Thunderbird 27.0 Beta 1	December 19, 2013	First Thunderbird 27.0 beta release.[207]
	28.0	28.0b1	Thunderbird 28.0 Beta 1	March 7, 2014	First Thunderbird 28.0 beta release.[208]
	29.0	29.0b1	Thunderbird 29.0 Beta 1	April 25, 2014	First Thunderbird 29.0 beta release.[209]
	30.0	30.0b1	Thunderbird 30.0 Beta 1	May 9, 2014	First Thunderbird 30.0 beta release.[210]
	31.0	31.0b1	Thunderbird 31.0 Beta 1	June 13, 2014	First Thunderbird 31.0 beta release.[211]
		31.0b2	Thunderbird 31.0 Beta 2	July 5, 2014	Second Thunderbird 31.0 beta release.
		31.0b3	Thunderbird 31.0 Beta 3	July 16, 2014	Third Thunderbird 31.0 beta release.
		31.0	Thunderbird 31.0	July 22, 2014	Official version 31.0 release.[212]
		31.1.0	Thunderbird 31.1.0	September 2, 2014	Security and stability update.[213]
		31.1.1	Thunderbird 31.1.1	September 9, 2014	Stability update.[214]
		31.1.2	Thunderbird 31.1.2	September 24, 2014	Security and stability update.[215]
		31.2.0	Thunderbird 31.2.0	October 14, 2014	Security and stability update.[216]
		31.3.0	Thunderbird 31.3.0	December 1, 2014	Security and stability update.[217]
		31.4.0	Thunderbird 31.4.0	January 13, 2015	Security and stability update.[218]
		31.5.0	Thunderbird 31.5.0	February 24, 2015	Security and stability update.[219]
		31.6.0	Thunderbird 31.6.0	March 31, 2015	Security and stability update.[220]
		31.7.0	Thunderbird 31.7.0	May 12, 2015	Security and stability update.[221]
Thunderbird 38	32.0	32.0b1	Thunderbird 32.0 Beta 1	August 14, 2014	First Thunderbird 32.0 beta release.[222]
	33.0	33.0b1	Thunderbird 33.0 Beta 1	September 24, 2014	First Thunderbird 33.0 beta release.[223]
	34.0	34.0b1	Thunderbird 34.0 Beta 1	November 15, 2014	First Thunderbird 34.0 beta release.[224]
	36.0	36.0b1[lower-roman 1]	Thunderbird 36.0 Beta 1	February 16, 2015	First Thunderbird 36.0 beta release.[225]
	37.0	37.0b1	Thunderbird 37.0 Beta 1	March 13, 2015	First Thunderbird 37.0 beta release.[226]
	38.0	38.0b1	Thunderbird 38.0 Beta 1	April 2, 2015	First Thunderbird 38.0 beta release.[227]
		38.0b2	Thunderbird 38.0 Beta 2	April 19, 2015	Second Thunderbird 38.0 beta release.
		38.0b3	Thunderbird 38.0 Beta 3	April 27, 2015	Third Thunderbird 38.0 beta release.
		38.0b4	Thunderbird 38.0 Beta 4	May 4, 2015	Fourth Thunderbird 38.0 beta release.
		38.0b6	Thunderbird 38.0 Beta 6	May 23, 2015	Sixth Thunderbird 38.0 beta release.
		38.0.1[lower-roman 1]	Thunderbird 38.0.1	June 11, 2015	Official version 38.0.1 release.[228]
		38.1.0	Thunderbird 38.1.0	July 9, 2015	Official version 38.1.0 release.[229]
		38.2.0	Thunderbird 38.2.0	August 14, 2015	Official version 38.2.0 release.[230]
		38.3.0	Thunderbird 38.3.0	September 29, 2015	Official version 38.3.0 release.[231]
		38.4.0	Thunderbird 38.4.0	November 23, 2015	Official version 38.4.0 release.[232]
		38.5.0	Thunderbird 38.5.0	December 23, 2015	Official version 38.5.0 release.[233]
		38.5.1	Thunderbird 38.5.1	January 7, 2016	Official version 38.5.1 release.[234]
		38.6.0	Thunderbird 38.6.0	February 16, 2016	Official version 38.6.0 release.[235]
		38.7.0	Thunderbird 38.7.0	March 14, 2016	Official version 38.7.0 release.[236]
		38.7.1	Thunderbird 38.7.1	March 25, 2016	Official version 38.7.1 release.[237]
		38.7.2	Thunderbird 38.7.2	April 4, 2016	Official version 38.7.2 release.[238]
Thunderbird 45	40.0	40.0b1[lower-roman 1]	Thunderbird 40.0 Beta 1	July 27, 2015	Thunderbird 40.0 beta release.[239]
	41.0	41.0b1	Thunderbird 41.0 Beta 1	September 10, 2015	First Thunderbird 41.0 beta release.[240]
		41.0b2	Thunderbird 41.0 Beta 2	September 17, 2015	Second Thunderbird 41.0 beta release.
	42.0	42.0b2	Thunderbird 42.0 Beta 2	October 13, 2015	First Thunderbird 42.0 beta release.[241]
	43.0	43.0b1	Thunderbird 43.0 Beta 1	December 31, 2015	First Thunderbird 43.0 beta release.[242]
	44.0	44.0b1	Thunderbird 44.0 Beta 1	January 14, 2016	First Thunderbird 44.0 beta release.[243]
	45.0	45.0b1	Thunderbird 45.0 Beta 1	February 3, 2016	First Thunderbird 45.0 beta release.[244]
		45.0b2	Thunderbird 45.0 Beta 2	February 20, 2016	Second Thunderbird 45.0 beta release.
		45.0b3	Thunderbird 45.0 Beta 3	March 29, 2016	Third Thunderbird 45.0 beta release.
		45.0b4	Thunderbird 45.0 Beta 4	April 5, 2016	Fourth Thunderbird 45.0 beta release.
		45.0	Thunderbird 45.0	April 12, 2016	Official version 45.0 release.[245]
Name	Gecko version	Version	Codename	Release date[1]	Significant changes

Notes

1. This release skips a version number which was not released.
2. This release skips a few version numbers which were not released.
3. Mozilla changed its release schedule for Thunderbird as of version 17,^[185] which resulted in omitted major version numbers between successive releases.

Release compatibility

Operating system		Latest stable version	Support status
Microsoft Windows	XP (SP2), Server 2003 (SP1), and later	45.0[246]	2003–present
	2000, XP (RTM, SP1), Server 2003 (RTM)	12.0.1[246]	2003–2012
	NT 4 / 98 / ME	2.0.0.24	2003–2010
	95	1.5.0.14	2003–2007
OS X	v10.6 – 10.10	45.0[246]	2007–present
	v10.4 – 10.5 (PPC)	3.1.20
	v10.2 – 10.3	2.0.0.24	2003–2010
	v10.0 – 10.1	1.0.8	2003–2006
Linux kernel 2.2.14 and newer (with some libraries)		45.0 (i686, x86_64)[246]	2003–present
OS/2 and eComStation		8.0	2003–2011
		10.0.12[247]	Unofficial
Sun Java Desktop System		1.0.2	2004–2005
Solaris	10 and OpenSolaris	31.7.0	2005–2015
	8 – 9	2.0.0.24	2003–2010

Future development

On December 23, 2004, the Project Lightning was announced for tightly integrating calendar functionality (scheduling, tasks, etc.) into Thunderbird. Lightning is just a project name, not a product name. Lightning 0.1 was released on March 14, 2006. The current version is 2.6, as at Thunderbird 24.01 release.

On October 11, 2006, Qualcomm and the Mozilla Foundation announced that "future versions of Eudora will be based upon the same technology platform as the open source Mozilla Thunderbird email program." The project is code-named Penelope. An unofficial Eudora/Penelope forum is accessible via web or newsreader.

On July 26, 2007, the Mozilla Foundation announced that Thunderbird would be developed by an independent organization, because the Mozilla Corporation (the for profit portion of Mozilla) is focusing on Mozilla Firefox development. This change was made in order to stimulate development in Thunderbird, which was being neglected during the Mozilla focus on Firefox.^[248]

On September 17, 2007, the Mozilla Foundation announced the funding of a new internet communications initiative with Dr. David Ascher of ActiveState. The purpose of this initiative is "to develop Internet communications software based on the Thunderbird product, code and brand".

On February 19, 2008, Mozilla Messaging started operations as a subsidiary of the Mozilla Foundation responsible for the development of email and similar communications. Its initial focus was on the next major version, Thunderbird 3.0, which was released on December 8, 2009.

On July 6, 2012, the Mozilla Foundation announced that while they will no longer be focused on innovations for Thunderbird, they would provide support until the second half of 2013. In addition, future Thunderbird development will be transitioned to a community-driven model.^[249]

See also

• History of Mozilla Application Suite
• History of Free Software

Notes

1. "Releases - MozillaWiki". Wiki.mozilla.org. Retrieved December 11, 2014.
2. "Thunderbird 0.1 Release Notes". mozillamessaging.com. 2003-07-28. Retrieved 2011-07-07.
3. "Thunderbird 0.2 Release Notes". mozillamessaging.com. 2003-09-03. Retrieved 2011-07-07.
4. "Thunderbird 0.3 Release Notes". mozillamessaging.com. 2003-10-17. Retrieved 2011-07-07.
5. "Thunderbird 0.4 Release Notes". mozillamessaging.com. 2003-12-07. Retrieved 2011-07-07.
6. "Thunderbird 0.5 Release Notes". mozillamessaging.com. 2004-02-09. Retrieved 2011-07-07.
7. "Thunderbird 0.6 Release Notes". mozillamessaging.com. 2004-05-03. Retrieved 2011-07-07.
8. "Thunderbird 0.7 Release Notes". mozillamessaging.com. 2004-06-16. Retrieved 2011-02-12.
9. "Thunderbird 0.7.3 Release Announcement". rumblingedge.com. 2004-08-04. Retrieved 2011-07-07.
10. "Thunderbird 0.8 Release Notes". mozillamessaging.com. 2004-09-14. Retrieved 2011-07-07.
11. "Thunderbird 0.9 Release Notes". mozillamessaging.com. 2004-11-03. Retrieved 2011-02-12.
12. "Thunderbird 1.0 RC 1 Release Announcement". rumblingedge.com. 2004-12-01. Retrieved 2011-07-07.
13. "Thunderbird 1.0 Release Notes". mozillamessaging.com. 2004-12-07. Retrieved 2011-07-07.
14. "Thunderbird 1.0.2 Release Notes". mozillamessaging.com. 2005-03-21. Retrieved 2011-07-07.
15. "Thunderbird 1.0.5 Release Notes". mozillamessaging.com. 2005-07-13. Retrieved 2011-07-07.
16. "Thunderbird 1.0.6 Release Notes". mozillamessaging.com. 2005-07-19. Retrieved 2011-07-07.
17. "Thunderbird 1.0.7 Release Notes". mozillamessaging.com. 2005-09-29. Retrieved 2011-07-07.
18. "Thunderbird 1.0.8 Release Notes". mozillamessaging.com. 2006-04-21. Retrieved 2011-07-07.
19. "Thunderbird 1.1 Alpha 1 Release Announcement". rumblingedge.com. 2005-06-02. Retrieved 2011-07-07.
20. "Thunderbird 1.1 Alpha 2 Release Announcement". rumblingedge.com. 2005-07-15. Retrieved 2011-07-07.
21. "Thunderbird 1.5 Beta 1 Release Notes". mozillamessaging.com. 2005-09-09. Retrieved 2011-07-07.
22. "Thunderbird 1.5 Beta 2 Release Notes". mozillamessaging.com. 2005-10-07. Retrieved 2011-07-07.
23. "Thunderbird 1.5 RC 1 Release Announcement". rumblingedge.com. 2005-11-05. Retrieved 2011-07-07.
24. "Thunderbird 1.5 RC 2 Release Announcement". rumblingedge.com. 2005-12-21. Retrieved 2011-07-07.
25. "Thunderbird 1.5 Release Notes". mozillamessaging.com. 2006-01-11. Retrieved 2011-07-07.
26. "Thunderbird 1.5.0.2 Release Notes". mozillamessaging.com. 2006-04-21. Retrieved 2011-07-07.
27. "Thunderbird 1.5.0.4 Release Notes". mozillamessaging.com. 2006-06-01. Retrieved 2011-07-07.
28. "Thunderbird 1.5.0.5 Release Notes". mozillamessaging.com. 2006-07-27. Retrieved 2011-07-07.
29. "Thunderbird 1.5.0.7 Release Notes". mozillamessaging.com. 2006-09-14. Retrieved 2011-07-07.
30. "Thunderbird 1.5.0.8 Release Notes". mozillamessaging.com. 2006-11-08. Retrieved 2011-07-07.
31. "Thunderbird 1.5.0.9 Release Notes". mozillamessaging.com. 2006-12-19. Retrieved 2011-07-07.
32. "Thunderbird 1.5.0.10 Release Notes". mozillamessaging.com. 2007-03-01. Retrieved 2011-07-07.
33. "Thunderbird 1.5.0.12 Release Notes". mozillamessaging.com. 2007-05-30. Retrieved 2011-07-07.
34. "Thunderbird 1.5.0.13 Release Notes". mozillamessaging.com. 2007-08-23. Retrieved 2011-07-07.
35. "Thunderbird 1.5.0.14 Release Notes". mozillamessaging.com. 2007-12-19. Retrieved 2011-07-07.
36. "Thunderbird 2.0 Alpha 1 Release Notes". mozillamessaging.com. 2006-07-28. Retrieved 2011-07-07.
37. "Thunderbird 2.0 Beta 1 Release Notes". mozillamessaging.com. 2006-12-12. Retrieved 2011-07-07.
38. "Thunderbird 2.0 Beta 2 Release Notes". mozillamessaging.com. 2007-01-23. Retrieved 2011-07-07.
39. "Thunderbird 2.0 RC 1 Release Announcement". rumblingedge.com. 2007-04-06. Retrieved 2011-07-07.
40. "Thunderbird 2.0 Release Notes". mozillamessaging.com. 2007-04-18. Retrieved 2011-07-07.
41. "Thunderbird 2.0.0.4 Release Notes". mozillamessaging.com. 2007-06-14. Retrieved 2011-07-07.
42. "Thunderbird 2.0.0.5 Release Notes". mozillamessaging.com. 2007-07-19. Retrieved 2011-07-07.
43. "Thunderbird 2.0.0.6 Release Notes". mozillamessaging.com. 2007-08-01. Retrieved 2011-07-07.
44. "Thunderbird 2.0.0.9 Release Notes". mozillamessaging.com. 2007-11-14. Retrieved 2011-07-07.
45. "Thunderbird 2.0.0.12 Release Notes". mozillamessaging.com. 2008-02-26. Retrieved 2011-07-07.
46. "Thunderbird 2.0.0.14 Release Notes". mozillamessaging.com. 2008-05-01. Retrieved 2011-07-07.
47. "Thunderbird 2.0.0.16 Release Notes". mozillamessaging.com. 2008-07-23. Retrieved 2011-07-07.
48. "Thunderbird 2.0.0.17 Release Notes". mozillamessaging.com. 2008-09-25. Retrieved 2011-07-07.
49. "Thunderbird 2.0.0.18 Release Notes". mozillamessaging.com. 2008-11-19. Retrieved 2011-07-07.
50. "Thunderbird 2.0.0.19 Release Notes". mozillamessaging.com. 2008-12-30. Retrieved 2011-07-07.
51. "Thunderbird 2.0.0.21 Release Notes". mozillamessaging.com. 2009-03-18. Retrieved 2011-07-07.
52. "Thunderbird 2.0.0.22 Release Notes". mozillamessaging.com. 2009-06-22. Retrieved 2011-07-07.
53. "Thunderbird 2.0.0.23 Release Notes". mozillamessaging.com. 2009-08-20. Retrieved 2011-07-07.
54. "Thunderbird 2.0.0.24 Release Notes". mozillamessaging.com. 2010-03-15. Retrieved 2011-07-07.
55. "Shredder Alpha 1 Release Notes". mozillamessaging.com. 2008-05-13. Retrieved 2011-07-07.
56. "Shredder Alpha 2 Release Notes". mozillamessaging.com. 2008-08-12. Retrieved 2011-07-07.
57. "Shredder Alpha 3 Release Notes". mozillamessaging.com. 2008-10-14. Retrieved 2011-07-07.
58. "Thunderbird 3.0 Beta 1 Release Notes". mozillamessaging.com. 2008-12-09. Retrieved 2011-07-07.
59. "Thunderbird 3.0 Beta 2 Release Notes". mozillamessaging.com. 2009-02-26. Retrieved 2011-07-07.
60. "Thunderbird 3.0 Beta 3 Release Notes". mozillamessaging.com. 2009-07-21. Retrieved 2011-07-07.
61. "Thunderbird 3.0 Beta 4 Release Notes". mozillamessaging.com. 2009-09-22. Retrieved 2011-07-07.
62. "Thunderbird 3.0 RC 1 Release Notes". mozillamessaging.com. 2009-11-24. Retrieved 2011-07-07.
63. "Thunderbird 3.0 RC 2 Release Notes". mozillamessaging.com. 2009-12-01. Retrieved 2011-07-07.
64. "Thunderbird 3.0 Release Notes". mozillamessaging.com. 2009-12-08. Retrieved 2011-07-07.
65. "Thunderbird 3.0.1 Release Notes". mozillamessaging.com. 2010-01-20. Retrieved 2011-07-07.
66. "Thunderbird 3.0.2 Release Notes". mozillamessaging.com. 2010-02-25. Retrieved 2011-07-07.
67. "Thunderbird 3.0.3 Release Notes". mozillamessaging.com. 2010-03-01. Retrieved 2011-07-07.
68. "Thunderbird 3.0.4 Release Notes". mozillamessaging.com. 2010-03-30. Retrieved 2011-07-07.
69. "Thunderbird 3.0.5 Release Notes". mozillamessaging.com. 2010-06-17. Retrieved 2011-07-07.
70. "Thunderbird 3.0.6 Release Notes". mozillamessaging.com. 2010-07-20. Retrieved 2011-07-07.
71. "Thunderbird 3.0.7 Release Notes". mozillamessaging.com. 2010-09-07. Retrieved 2011-07-07.
72. "Thunderbird 3.0.8 Release Notes". mozillamessaging.com. 2010-09-16. Retrieved 2011-07-07.
73. "Thunderbird 3.0.9 Release Notes". mozillamessaging.com. 2010-10-19. Retrieved 2011-07-07.
74. "Thunderbird 3.0.10 Release Notes". mozillamessaging.com. 2010-10-27. Retrieved 2011-07-07.
75. "Thunderbird 3.0.11 Release Notes". mozillamessaging.com. 2010-12-09. Retrieved 2011-07-07.
76. "Lanikai Alpha 1 Release Notes". mozillamessaging.com. 2010-02-03. Retrieved 2011-07-07.
77. "Thunderbird 3.1 Beta 1 Release Notes". mozillamessaging.com. 2010-03-10. Retrieved 2011-07-07.
78. "Thunderbird 3.1 Beta 2 Release Notes". mozillamessaging.com. 2010-05-05. Retrieved 2011-07-07.
79. "Thunderbird 3.1 RC 1 Release Notes". mozillamessaging.com. 2010-05-27. Retrieved 2011-07-07.
80. "Thunderbird 3.1 RC 2 Release Notes". mozillamessaging.com. 2010-06-09. Retrieved 2011-07-07.
81. "Thunderbird 3.1 Release Notes". mozillamessaging.com. 2010-06-24. Retrieved 2011-07-07.
82. "Thunderbird 3.1.1 Release Notes". mozillamessaging.com. 2010-07-20. Retrieved 2011-07-07.
83. "Thunderbird 3.1.2 Release Notes". mozillamessaging.com. 2010-08-05. Retrieved 2011-07-07.
84. "Thunderbird 3.1.3 Release Notes". mozillamessaging.com. 2010-09-07. Retrieved 2011-07-07.
85. "Thunderbird 3.1.4 Release Notes". mozillamessaging.com. 2010-09-16. Retrieved 2011-07-07.
86. "Thunderbird 3.1.5 Release Notes". mozillamessaging.com. 2010-10-19. Retrieved 2011-07-07.
87. "Thunderbird 3.1.6 Release Notes". mozillamessaging.com. 2010-10-27. Retrieved 2011-07-07.
88. "Thunderbird 3.1.7 Release Notes". mozilla.com. 2010-12-09. Retrieved 2011-12-24.
89. "Thunderbird 3.1.8 Release Notes". mozilla.com. 2010-03-01. Retrieved 2011-12-24.
90. "Thunderbird 3.1.9 Release Notes". mozilla.com. 2011-03-04. Retrieved 2011-12-24.
91. "Thunderbird 3.1.10 Release Notes". mozilla.com. 2011-04-28. Retrieved 2011-12-24.
92. "Thunderbird 3.1.11 Release Notes". mozilla.com. 2011-06-21. Retrieved 2011-12-24.
93. "Thunderbird 3.1.12 Release Notes". mozilla.com. 2011-08-16. Retrieved 2011-12-24.
94. "Thunderbird 3.1.13 Release Notes". mozilla.com. 2011-08-31. Retrieved 2011-12-24.
95. "Thunderbird 3.1.14 Release Notes". mozilla.com. 2011-09-06. Retrieved 2011-12-24.
96. "Thunderbird 3.1.15 Release Notes". mozilla.com. 2011-09-27. Retrieved 2011-12-24.
97. "Thunderbird 3.1.16 Release Notes". mozilla.com. 2011-12-24. Retrieved 2011-11-08.
98. "Thunderbird 3.1.17 Release Notes". mozillamessaging.com. 2011-11-20. Retrieved 2011-12-24.
99. "Thunderbird 3.1.18 Release Notes". mozillamessaging.com. 2012-01-31. Retrieved 2012-01-31.
100. "Thunderbird 3.1.19 Release Notes". mozillamessaging.com. 2012-02-16. Retrieved 2012-03-29.
101. "Thunderbird 3.1.19 Release Notes". mozillamessaging.com. 2012-03-12. Retrieved 2012-03-13.
102. "Miramar Alpha 1 Release Notes". mozillamessaging.com. 2010-11-23. Retrieved 2011-07-07.
103. "Miramar Alpha 2 Release Notes". mozillamessaging.com. 2011-01-20. Retrieved 2011-07-07.
104. "Miramar Alpha 3 Release Notes". mozillamessaging.com. 2011-03-15. Retrieved 2011-07-07.
105. "Thunderbird 5.0 Beta 1 Release Notes". mozillamessaging.com. 2011-06-02. Retrieved 2011-07-07.
106. "Thunderbird 5.0 Beta 2 Release Notes". mozillamessaging.com. 2011-06-22. Retrieved 2011-07-07.
107. "Thunderbird 5.0 Release Notes". mozilla.org. 2011-06-28. Retrieved 2011-07-07.
108. "Thunderbird 6.0 - First Earlybird build". ftp.mozilla.com. 2011-06-16. Retrieved 2011-07-07.
109. "Thunderbird 6.0 Beta Release Notes". mozilla.org. 2011-07-20. Retrieved 2011-07-29.
110. "Thunderbird 6.0 Beta 1 Release Announcement". mozilla.org. 2011-07-20. Retrieved 2011-08-10.
111. "Thunderbird 6.0 Beta 2 Release Announcement". mozilla.org. 2011-08-02. Retrieved 2011-08-10.
112. "Thunderbird 6.0 Beta 3 Release Announcement". mozilla.org. 2011-08-10. Retrieved 2011-08-10.
113. "Thunderbird 6.0 Release Notes". mozilla.org. 2011-08-16. Retrieved 2011-08-17.
114. "Thunderbird 6.0 Release Announcement". blog.mozilla.com. 2011-08-16. Retrieved 2011-12-25.
115. "Thunderbird 6.0.1 Release Notes". mozilla.org. 2011-08-31. Retrieved 2011-09-05.
116. "Thunderbird 6.0.2 Release Notes". mozilla.org. 2011-09-06. Retrieved 2011-09-06.
117. "Thunderbird 7.0 - First Nightly build". ftp.mozilla.com. 2011-05-27. Retrieved 2011-07-07.
118. "Thunderbird 7.0 - First Earlybird build". ftp.mozilla.com. 2011-07-06. Retrieved 2011-07-07.
119. "Thunderbird 7.0 Beta Release Notes". mozilla.org. 2011-08-26. Retrieved 2011-08-30.
120. "Thunderbird 7.0 Beta 1 Release Announcement". blog.mozilla.com. 2011-08-26. Retrieved 2011-12-25.
121. "Thunderbird 7.0 Beta 2 Release Announcement". mozilla.org. 2011-09-06. Retrieved 2011-09-30.
122. "Thunderbird 7.0 Beta 3 Release Announcement". mozilla.org. 2011-09-20. Retrieved 2011-09-30.
123. "Thunderbird 7.0 Release Notes". mozilla.org. 2011-09-27. Retrieved 2011-09-27.
124. "Thunderbird 7.0 Release Announcement". blog.mozilla.com. 2011-09-27. Retrieved 2011-12-25.
125. "Thunderbird 7.0.1 Release Notes". mozilla.org. 2011-09-30. Retrieved 2011-10-01.
126. "Thunderbird 7.0.1 Release Announcement". blog.mozilla.com. 2011-09-30. Retrieved 2011-12-25.
127. "Thunderbird 8.0 - First Nightly build". ftp.mozilla.com. 2011-07-06. Retrieved 2011-07-07.
128. "Thunderbird 8.0 - First Earlybird build". ftp.mozilla.com. 2011-08-17. Retrieved 2011-08-17.
129. "Thunderbird 8.0 Beta Release Notes". mozilla.org. 2011-10-04. Retrieved 2011-10-26.
130. "Thunderbird 8.0 Beta Release Announcement". mozilla.org. 2011-10-04. Retrieved 2011-10-26.
131. "Thunderbird 8.0 Beta 3 Release Announcement". mozilla.org. 2011-10-19. Retrieved 2011-10-26.
132. "Thunderbird 8.0 Release Notes". mozilla.org. 2011-11-08. Retrieved 2011-11-08.
133. "Thunderbird 8.0 Release Announcement". blog.mozilla.com. 2011-11-08. Retrieved 2011-12-25.
134. "Thunderbird 9.0 - First Nightly build". ftp.mozilla.com. 2011-08-17. Retrieved 2011-08-17.
135. "Thunderbird 9.0 - First Earlybird build". ftp.mozilla.com. 2011-09-28. Retrieved 2011-09-28.
136. "Thunderbird 9.0 Beta Release Notes". mozilla.org. 2011-11-16. Retrieved 2011-12-25.
137. "Thunderbird 9.0 Beta Release Announcement". blog.mozilla.com. 2011-11-16. Retrieved 2011-12-25.
138. "Thunderbird 9.0 Release Notes". mozilla.org. 2011-12-20. Retrieved 2011-12-25.
139. "Thunderbird 9.0 Release Announcement". blog.mozilla.com. 2011-12-21. Retrieved 2011-12-25.
140. "Thunderbird 9.0.1 Release Notes". mozilla.org. 2011-12-23. Retrieved 2011-12-25.
141. "Thunderbird 10.0 - First Nightly build". ftp.mozilla.com. 2011-09-28. Retrieved 2011-09-28.
142. "Thunderbird 10.0 - First Earlybird build". ftp.mozilla.com. 2011-11-09. Retrieved 2011-12-31.
143. "Thunderbird 10.0 Beta Release Notes". mozilla.org. 2011-12-23. Retrieved 2011-12-25.
144. "Thunderbird 10.0 Beta Release Announcement". blog.mozilla.com. 2011-12-23. Retrieved 2011-12-25.
145. "Thunderbird 10.0 Release Notes". mozilla.org. 2012-01-31. Retrieved 2012-01-31.
146. "Thunderbird 10.0 Release Announcement". blog.mozilla.com. 2012-01-31. Retrieved 2012-01-31.
147. "Mozilla Thunderbird Extended Support Release Announcement". Mozilla. 2012-01-31. Retrieved 2012-01-31.
148. "Thunderbird 10.0.1 Release Notes". mozilla.org. 2012-02-12. Retrieved 2012-02-25.
149. "Thunderbird 10.0.2 Release Notes". mozilla.org. 2012-02-16. Retrieved 2012-02-25.
150. "Thunderbird 10.0.3esr Release Notes". mozilla.org. 2012-03-13. Retrieved 2012-03-29.
151. "Thunderbird 10.0.4esr Release Notes". mozilla.org. 2012-04-24. Retrieved 2012-05-09.
152. "Thunderbird 10.0.5esr Release Notes". mozilla.org. 2012-06-06. Retrieved 2012-06-06.
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External links

• Mozilla release schedule for recent and upcoming versions of Thunderbird and Firefox
• Thunderbird release notes for each version
• Downloadable versions of Thunderbird from OSUOSL
• The Rumbling Edge: Thunderbird release changelogs
• Jon Hicks describing the process of making Mozilla Thunderbird's logo