History of Mozilla Thunderbird

Last updated

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.

Contents

Early beginnings: A simple email and news client

Logos used during the development of Thunderbird Mozilla Thunderbird logo history.png
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 then new toolkit. This contrasted with the previous all-in-one approach, hopefully leading 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. [1]

Release history


History of Mozilla Thunderbird

Color chart

ColourMeaning
RedFormer release; no longer supported
PinkFormer test release
YellowFormer release; still supported
GreenCurrent supported release
BlueFuture release
GoldCurrent test release
PurpleFuture test release

Current supported release

Thunderbird 115.10.1

Current test releases

Thunderbird Beta 126.0b1
Thunderbird Daily 127.0a1
NameGecko versionVersionCodenameRelease dateSignificant changes
Thunderbird 1.50.128 July 2003First release. [2]
0.23 September 2003 [3]
0.317 October 2003 [4]
1.60.47 December 2003 [5]
0.59 February 2004 [6]
1.70.63 May 2004Pinstripe theme for Mac OS X, Windows installer, better junk mail handling, IMAP IDLE and LDAP version 3 support. [7]
0.7 RC114 June 2004Polish work. [8]
0.716 June 2004Smaller download size, improved IMAP support, updated extension and theme managers. [9]
0.7.128 June 2004Bugfix release.
0.7.28 July 2004Vulnerability patch (Windows only).
0.7.34 August 2004Vulnerability patch. [10]
0.814 September 2004Improved Privacy Controls, Global Inbox, RSS/Atom Integration, Improved data migration. Improved spell checker support. [11]
0.93 November 2004More RSS integration. Favorite folders. Menu and dialog polish. Message list groups. Virtual folders. [12]
Thunderbird 1 1.0 RC1Thunderbird 1.0
Release Candidate 1		1 December 2004First Thunderbird release candidate. Bug fixing. Improved theme. Polish work. [13]
1.0Thunderbird 1.07 December 2004Official version 1.0 release. [14]
1.0.2 [lower-roman 1] 21 March 2005Security and stability update. [15]
1.0.5 [lower-roman 2] 13 July 2005Security and stability update. [16]
1.0.619 July 2005Stability update. [17]
1.0.729 September 2005Security and stability update. [18]
1.0.821 April 2006Security and stability update. [19] End-of-life 1.0.x product line
Thunderbird 1.5 1.81.1a1Thunderbird 1.1 Alpha 12 June 2005First Thunderbird 1.1 alpha release. Stability improvement and security fixes. [20]
1.1a2Thunderbird 1.1 Alpha 215 July 2005Second Thunderbird 1.1 alpha release. [21]
1.5b1Thunderbird 1.5 Beta 19 September 2005First Thunderbird 1.5 beta release. New update system (binary patch). [22]
1.5b2Thunderbird 1.5 Beta 27 October 2005Second Thunderbird 1.5 beta release. Improvements to automated update system, website rendering and performance. Several security fixes. [23]
1.5 RC1Thunderbird 1.5
Release Candidate 1		5 November 2005First Thunderbird 1.5 release candidate. [24]
1.5 RC2Thunderbird 1.5
Release Candidate 2		21 December 2005Second Thunderbird 1.5 release candidate. [25]
1.5Thunderbird 1.511 January 2006Official version 1.5 release. Identical to 1.5 RC2. [26]
1.5.0.2 [lower-roman 1] 21 April 2006Security and stability update. [27]
1.5.0.4 [lower-roman 1] 1 June 2006Security and stability update. Native support for Intel-based Macintosh computers by shipping universal binary. [28]
1.5.0.527 July 2006Security and stability update. [29]
1.5.0.7 [lower-roman 1] 14 September 2006Security and stability update. [30]
1.5.0.88 November 2006Security and stability update. [31]
1.5.0.919 December 2006Security and stability update. [32]
1.5.0.101 March 2007Security and stability update. [33]
1.5.0.12 [lower-roman 1] 30 May 2007Security and stability update. [34]
1.5.0.1323 August 2007Security and stability update. [35]
1.5.0.1419 December 2007Security and stability update. [36] End-of-life 1.5.0.x product line
Thunderbird 2 1.8.12.0a1Thunderbird 2.0 Alpha 128 July 2006First 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. [37]
2.0b1Thunderbird 2.0 Beta 112 December 2006First Thunderbird 2 beta release. Improved theme. Session history navigation. Improved offline management. Folder summary popups. Improved performance in saved search folders. Improved filing tools. [38]
2.0b2Thunderbird 2.0 Beta 223 January 2007Second Thunderbird 2 beta release. [39]
2.0 RC1Thunderbird 2.0
Release Candidate 1		6 April 2007First Thunderbird 2 release candidate. [40]
2.0Thunderbird 2.018 April 2007Official 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. [41]
2.0.0.4 [lower-roman 2] 14 June 2007Security and stability update. Korean locale was added. [42]
2.0.0.519 July 2007Security and stability update. [43]
2.0.0.61 August 2007Security and stability update. [44]
2.0.0.9 [lower-roman 2] 14 November 2007Security and stability update. Hebrew locale was added. [45]
2.0.0.12 [lower-roman 2] 26 February 2008Security and stability update. Afrikaans and Ukrainian locales were added. [46]
2.0.0.141 May 2008Security and stability update.

Includes fixes that would have been part of Thunderbird 2.0.0.13 which was officially abandoned on 14 April 2008. [47]

2.0.0.1623 July 2008Security and stability update.

Replacement for Thunderbird 2.0.0.15 which was officially abandoned on 27 June 2008. [48]

2.0.0.1725 September 2008Security and stability update. [49]
2.0.0.1819 November 2008Security and stability update. [50]
2.0.0.1930 December 2008Security and stability update. Shipped with equivalent fixes to Firefox 2.0.0.20. [51]
2.0.0.21 [lower-roman 1] 18 March 2009Security and stability update. [52]
2.0.0.2222 June 2009Security and stability update. [53]
2.0.0.2320 August 2009Security and stability update. [54]
2.0.0.2415 March 2010Security and stability update. [55] End-of-life 2.0.0.x product line
Thunderbird 3 1.93.0a1Shredder Alpha 113 May 2008First Thunderbird 3 alpha release. [56]
3.0a2Shredder Alpha 212 August 2008Second Thunderbird 3 alpha release. [57]
1.9.13.0a3Shredder Alpha 314 October 2008Third Thunderbird 3 alpha release. [58]
3.0b1Thunderbird 3.0 Beta 19 December 2008First Thunderbird 3 beta release. [59]
3.0b2Thunderbird 3.0 Beta 226 February 2009Second Thunderbird 3 beta release. [60]
3.0b3Thunderbird 3.0 Beta 321 July 2009Third Thunderbird 3 beta release. Major features added, theme redesigns. [61]
3.0b4Thunderbird 3.0 Beta 422 September 2009Fourth Thunderbird 3 beta release. New Gloda search functionality enabled. [62]
3.0 RC1Thunderbird 3.0
Release Candidate 1		24 November 2009First Thunderbird 3 release candidate. [63]
3.0 RC2Thunderbird 3.0
Release Candidate 2		1 December 2009Second Thunderbird 3 release candidate. [64]
3.0Thunderbird 3.08 December 2009Official version 3.0 release. [65]
3.0.120 January 2010Regular security and stability update. [66]
3.0.225 February 2010Regular security and stability update. [67]
3.0.31 March 2010Off-cycle stability update. Fix for missing folders or empty folder panel after updating to Thunderbird 3.0.2. [68]
3.0.430 March 2010Regular security and stability update. [69]
3.0.517 June 2010Off-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. [70]
3.0.620 July 2010Regular security and stability update. [71]
3.0.77 September 2010Regular security and stability update. [72]
3.0.816 September 2010Off-cycle stability update. [73]
3.0.919 October 2010Regular security and stability update. [74]
3.0.1027 October 2010Off-cycle security update. [75]
3.0.119 December 2010Regular security and stability update. [76] End-of-life 3.0.x product line
Thunderbird 3.1 1.9.23.1a1Lanikai Alpha 13 February 2010First Thunderbird 3.1 alpha release. [77]
3.1b1Thunderbird 3.1 Beta 110 March 2010First Thunderbird 3.1 beta release. [78]
3.1b2Thunderbird 3.1 Beta 25 May 2010Second Thunderbird 3.1 beta release. [79]
3.1 RC1Thunderbird 3.1
Release Candidate 1		27 May 2010First Thunderbird 3.1 release candidate. [80]
3.1 RC2Thunderbird 3.1
Release Candidate 2		9 June 2010Second Thunderbird 3.1 release candidate. [81]
3.1Thunderbird 3.124 June 2010Official version 3.1 release. [82]
3.1.120 July 2010Regular security and stability update. [83]
3.1.25 August 2010Off-cycle stability update. [84]
3.1.37 September 2010Regular security and stability update. [85]
3.1.416 September 2010Off-cycle stability update. [86]
3.1.519 October 2010Regular security and stability update. [87]
3.1.627 October 2010Off-cycle security update. [88]
3.1.79 December 2010Regular security and stability update. [89]
3.1.81 March 2011Regular security and stability update. [90]
3.1.94 March 2011Off-cycle stability update. Fixed post-update crash affecting some users. [91]
3.1.1028 April 2011Regular security and stability update. [92]
3.1.1121 June 2011Regular security and stability update. [93]
3.1.1216 August 2011Regular security and stability update. [94]
3.1.1331 August 2011Off-cycle security update. [95]
3.1.146 September 2011Off-cycle security update. [96]
3.1.1527 September 2011Regular security and stability update. [97]
3.1.168 November 2011Regular security and stability update. [98]
3.1.1720 December 2011Regular security and stability update. [99]
3.1.1831 January 2012Regular security and stability update. [100]
3.1.1916 February 2012Regular security and stability update. [101]
3.1.2012 March 2012Regular security and stability update. [102] End-of-life 3.1.x product line on 24 April 2012.
Thunderbird 5 2.03.3a1Miramar Alpha 123 November 2010First Thunderbird 3.3 alpha release. [103]
3.3a2Miramar Alpha 220 January 2011Second Thunderbird 3.3 alpha release. [104]
3.3a3Miramar Alpha 315 March 2011Third Thunderbird 3.3 alpha release. [105]
3.4a1Thunderbird Nightly 3.410 May 2011First Thunderbird 3.4 alpha release. [106]
5.05.0b1Thunderbird 5.0 Beta 12 June 2011First Thunderbird 5.0 beta release. [107]
5.0b2Thunderbird 5.0 Beta 222 June 2011Second Thunderbird 5.0 beta release. [108]
5.0Thunderbird 5.028 June 2011New 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. [109]

End-of-life 5.0.x product line on 16 August 2011.

Thunderbird 6 6.06.0a2Thunderbird 6.0 Earlybird16 June 2011First Thunderbird 6.0 Earlybird build. [110]
6.0b1Thunderbird 6.0 Beta 120 July 2011First Thunderbird 6.0 beta release. [111] [112]
6.0b2Thunderbird 6.0 Beta 22 August 2011Second Thunderbird 6.0 beta release. [113]
6.0b3Thunderbird 6.0 Beta 310 August 2011Third Thunderbird 6.0 beta release. [114]
6.0Thunderbird 6.016 August 2011Based 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 [115] [116]
6.0.1Thunderbird 6.0.131 August 2011Off-cycle security update. [117]
6.0.2Thunderbird 6.0.26 September 2011Off-cycle security update. [118]

End-of-life 6.0.x product line on 27 September 2011.

Thunderbird 7 7.07.0a1Thunderbird 7.0 Nightly27 May 2011First Thunderbird 7.0 Nightly build. [119]
7.0a2Thunderbird 7.0 Earlybird6 July 2011First Thunderbird 7.0 Earlybird build. [120]
7.0b1Thunderbird 7.0 Beta 126 August 2011First Thunderbird 7.0 beta release. [121] [122]
7.0b2Thunderbird 7.0 Beta 26 September 2011Second Thunderbird 7.0 beta release. [123]
7.0b3Thunderbird 7.0 Beta 320 September 2011Third Thunderbird 7.0 beta release. [124]
7.0Thunderbird 7.027 September 2011Based 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 [125] [126]
7.0.1Thunderbird 7.0.130 September 2011Off-cycle stability update. Fixed a rare issue where some users could find one or more of their add-ons hidden after a Thunderbird update. [127] [128]

End-of-life 7.0.x product line on 8 November 2011.

Thunderbird 8 8.08.0a1Thunderbird 8.0 Nightly6 July 2011First Thunderbird 8.0 Nightly build. [129]
8.0a2Thunderbird 8.0 Earlybird17 August 2011First Thunderbird 8.0 Earlybird build. [130]
8.0b1Thunderbird 8.0 Beta 14 October 2011First Thunderbird 8.0 beta release. [131] [132]
8.0b2Thunderbird 8.0 Beta 212 October 2011Second Thunderbird 8.0 beta release.
8.0b3Thunderbird 8.0 Beta 319 October 2011Third Thunderbird 8.0 beta release. [133]
8.0b4Thunderbird 8.0 Beta 41 November 2011Fourth Thunderbird 8.0 beta release.
8.0b5Thunderbird 8.0 Beta 53 November 2011Fifth Thunderbird 8.0 beta release.
8.0Thunderbird 8.08 November 2011Based 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 [134] [135]

End-of-life 8.0.x product line on 20 December 2011.

Thunderbird 9 9.09.0a1Thunderbird 9.0 Nightly17 August 2011First Thunderbird 9.0 Nightly build. [136]
9.0a2Thunderbird 9.0 Earlybird28 September 2011First Thunderbird 9.0 Earlybird build. [137]
9.0b1Thunderbird 9.0 Beta 116 November 2011First Thunderbird 9.0 beta release. [138] [139]
9.0b2Thunderbird 9.0 Beta 224 November 2011Second Thunderbird 9.0 beta release.
9.0b3Thunderbird 9.0 Beta 31 December 2011Third Thunderbird 9.0 beta release.
9.0b4Thunderbird 9.0 Beta 48 December 2011Fourth Thunderbird 9.0 beta release.
9.0b5Thunderbird 9.0 Beta 514 December 2011Fifth Thunderbird 9.0 beta release.
9.0Thunderbird 9.020 December 2011Based 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. [140] [141]
9.0.1Thunderbird 9.0.123 December 2011Off-cycle security and stability update. [142]

End-of-life 9.0.x product line on 31 January 2012.

Thunderbird 10 10.010.0a1Thunderbird 10.0 Nightly28 September 2011First Thunderbird 10.0 Nightly build. [143]
10.0a2Thunderbird 10.0 Earlybird9 November 2011First Thunderbird 10.0 Earlybird build. [144]
10.0b1Thunderbird 10.0 Beta 123 December 2011First Thunderbird 10.0 beta release. [145] [146]
10.0b2Thunderbird 10.0 Beta 29 January 2012Second Thunderbird 10.0 beta release.
10.0b3Thunderbird 10.0 Beta 311 January 2012Third Thunderbird 10.0 beta release.
10.0b4Thunderbird 10.0 Beta 418 January 2012Fourth Thunderbird 10.0 beta release.
10.0b5Thunderbird 10.0 Beta 524 January 2012Fifth Thunderbird 10.0 beta release.
10.0Thunderbird 10.031 January 2012Official version 10.0 release. [147] [148] First Extended Support Release (ESR). [149]
10.0.1Thunderbird 10.0.112 February 2012Off-cycle security and stability update. [150]
10.0.2Thunderbird 10.0.216 February 2012Off-cycle security and stability update. [151]
10.0.3esrThunderbird 10.0.3esr13 March 2012Regular security and stability update. [152]
10.0.4esrThunderbird 10.0.4esr24 April 2012Regular security and stability update. [153]
10.0.5esrThunderbird 10.0.5esr6 June 2012Regular security and stability update. [154]
10.0.6esrThunderbird 10.0.6esr17 July 2012Regular security and stability update. [155]
10.0.7esrThunderbird 10.0.7esr28 August 2012Regular security and stability update. [156]
10.0.8esrThunderbird 10.0.8esr9 October 2012Regular security and stability update. [157]
10.0.9esrThunderbird 10.0.9esr12 October 2012Off-cycle security and stability update. [158]
10.0.10esrThunderbird 10.0.10esr29 October 2012Off-cycle security and stability update. [159]
10.0.11esrThunderbird 10.0.11esr20 November 2012Regular security and stability update. [160]
10.0.12esrThunderbird 10.0.12esr8 January 2013Regular security and stability update. [161]

End-of-life 10.0.x product line on 19 February 2013. [162]

Thunderbird 11 11.011.0Thunderbird 11.013 March 2012Official version 11.0 release. [163]
11.0.1Thunderbird 11.0.128 March 2012Off-cycle security and stability update. [164]

End-of-life 11.0.x product line on 24 April 2012.

Thunderbird 12 12.012.0Thunderbird 12.024 April 2012Official version 12.0 release. [165]
12.0.1Thunderbird 12.0.130 April 2012Off-cycle security and stability update. [166]

End-of-life 12.0.x product line on 5 June 2012.

Thunderbird 13 13.013.0Thunderbird 13.05 June 2012Official version 13.0 release. [167]
13.0.1Thunderbird 13.0.115 June 2012Off-cycle security and stability update. [168]

End-of-life 13.0.x product line on 17 July 2012.

Thunderbird 14 14.014.0Thunderbird 14.017 July 2012Official version 14.0 release. [169]

End-of-life 14.0.x product line on 28 August 2012.

Thunderbird 15 15.015.0Thunderbird 15.028 August 2012Official version 15.0 release. [170]
15.0.1Thunderbird 15.0.110 September 2012Off-cycle security and stability update. [171]

End-of-life 15.0.x product line on 9 October 2012.

Thunderbird 16 16.016.0Thunderbird 16.09 October 2012Official version 16.0 release. [172]
16.0.1Thunderbird 16.0.111 October 2012Off-cycle security and stability update. [173]
16.0.2Thunderbird 16.0.229 October 2012Off-cycle security and stability update. [174]

End-of-life 16.0.x product line on 20 November 2012.

Thunderbird 17 17.017.0esrThunderbird 17.0esr20 November 2012Official version 17.0esr release. [175] Second Extended Support Release (ESR).
17.0.2esrThunderbird 17.0.2esr8 January 2013Regular security and stability update. [176]
17.0.3esrThunderbird 17.0.3esr19 February 2013Regular security and stability update. [177]
17.0.4esrThunderbird 17.0.4esr11 March 2013Regular security and stability update. [178]
17.0.5esrThunderbird 17.0.5esr2 April 2013Regular security and stability update. [179]
17.0.6esrThunderbird 17.0.6esr14 May 2013Regular security and stability update. [180]
17.0.7esrThunderbird 17.0.7esr25 June 2013Regular security and stability update. [181]
17.0.8esrThunderbird 17.0.8esr6 August 2013Regular security and stability update. [182] [183]
17.0.9esrThunderbird 17.0.9esr17 September 2013Regular security and stability update. [184]
17.0.10esrThunderbird 17.0.10esr29 October 2013Regular security and stability update. [185]
17.0.11esrThunderbird 17.0.11esr19 November 2013Off-cycle security and stability update. [186]

End-of-life 17.0.x product line on 3 December 2013. [162]

Thunderbird 24 18.0 [lower-roman 3] 18.0b1Thunderbird 18.0 Beta 129 November 2012First Thunderbird 18.0 beta release. [188]
19.019.0b1Thunderbird 19.0 Beta 118 January 2013First Thunderbird 19.0 beta release. [189]
20.020.0b1Thunderbird 20.0 Beta 18 March 2013First Thunderbird 20.0 beta release. [190]
21.021.0b1Thunderbird 21.0 Beta 110 April 2013First Thunderbird 21.0 beta release. [191]
22.022.0b1Thunderbird 22.0 Beta 123 May 2013First Thunderbird 22.0 beta release. [192]
23.023.0b1Thunderbird 23.0 Beta 13 July 2013First Thunderbird 23.0 beta release. [193]
24.024.0b1Thunderbird 24.0 Beta 115 August 2013First Thunderbird 24.0 beta release (only US English). [194]
24.0b2Thunderbird 24.0 Beta 229 August 2013Second Thunderbird 24.0 beta release.
24.0b3Thunderbird 24.0 Beta 311 September 2013Third Thunderbird 24.0 beta release.
24.0Thunderbird 24.017 September 2013Official version 24.0 release. [195]
24.0.1Thunderbird 24.0.111 October 2013Security and stability update. [196]
24.1.0Thunderbird 24.1.029 October 2013Security and stability update. [197]
24.1.1Thunderbird 24.1.119 November 2013Security and stability update. [198]
24.2.0Thunderbird 24.2.010 December 2013Security and stability update. [199]
24.3.0Thunderbird 24.3.04 February 2014Security and stability update. [200]
24.4.0Thunderbird 24.4.018 March 2014Security and stability update. [201]
24.5.0Thunderbird 24.5.029 April 2014Security and stability update. [202]
24.6.0Thunderbird 24.6.010 June 2014Security and stability update. [203]
24.7.0Thunderbird 24.7.022 July 2014Security and stability update. [204]
24.8.0Thunderbird 24.8.02 September 2014Security and stability update. [205]
24.8.1Thunderbird 24.8.124 September 2014Security update. [206]
Thunderbird 31 25.025.0b1Thunderbird 25.0 Beta 117 October 2013First Thunderbird 25.0 beta release. [207]
26.026.0b1Thunderbird 26.0 Beta 118 November 2013First Thunderbird 26.0 beta release. [208]
27.027.0b1Thunderbird 27.0 Beta 119 December 2013First Thunderbird 27.0 beta release. [209]
28.028.0b1Thunderbird 28.0 Beta 17 March 2014First Thunderbird 28.0 beta release. [210]
29.029.0b1Thunderbird 29.0 Beta 125 April 2014First Thunderbird 29.0 beta release. [211]
30.030.0b1Thunderbird 30.0 Beta 19 May 2014First Thunderbird 30.0 beta release. [212]
31.031.0b1Thunderbird 31.0 Beta 113 June 2014First Thunderbird 31.0 beta release. [213]
31.0b2Thunderbird 31.0 Beta 25 July 2014Second Thunderbird 31.0 beta release.
31.0b3Thunderbird 31.0 Beta 316 July 2014Third Thunderbird 31.0 beta release.
31.0Thunderbird 31.022 July 2014Official version 31.0 release. [214]
31.1.0Thunderbird 31.1.02 September 2014Security and stability update. [215]
31.1.1Thunderbird 31.1.19 September 2014Stability update. [216]
31.1.2Thunderbird 31.1.224 September 2014Security and stability update. [217]
31.2.0Thunderbird 31.2.014 October 2014Security and stability update. [218]
31.3.0Thunderbird 31.3.01 December 2014Security and stability update. [219]
31.4.0Thunderbird 31.4.013 January 2015Security and stability update. [220]
31.5.0Thunderbird 31.5.024 February 2015Security and stability update. [221]
31.6.0Thunderbird 31.6.031 March 2015Security and stability update. [222]
31.7.0Thunderbird 31.7.012 May 2015Security and stability update. [223]
31.8.0Thunderbird 31.8.017 July 2015Security and stability update. [224]
Thunderbird 38 32.0 [225] 32.0b1Thunderbird 32.0 Beta 114 August 2014
33.0 [226] 33.0b1Thunderbird 33.0 Beta 124 September 2014
34.0 [227] 34.0b1Thunderbird 34.0 Beta 115 November 2014
36.0 [228] 36.0b1 [lower-roman 1] Thunderbird 36.0 Beta 116 February 2015
37.0 [229] 37.0b1Thunderbird 37.0 Beta 113 March 2015
38.0 [230] 38.0b1Thunderbird 38.0 Beta 12 April 2015
38.0b2Thunderbird 38.0 Beta 219 April 2015
38.0b3Thunderbird 38.0 Beta 327 April 2015
38.0b4Thunderbird 38.0 Beta 44 May 2015
38.0b5Thunderbird 38.0 Beta 512 May 2015
38.0b6Thunderbird 38.0 Beta 623 May 2015
38.0.1 [lower-roman 1] [231] Thunderbird 38.0.111 June 2015
38.1.0 [232] Thunderbird 38.1.09 July 2015
38.2.0 [233] Thunderbird 38.2.014 August 2015
38.3.0 [234] Thunderbird 38.3.029 September 2015
38.4.0 [235] Thunderbird 38.4.023 November 2015
38.5.0 [236] Thunderbird 38.5.023 December 2015
38.5.1 [237] Thunderbird 38.5.17 January 2016
38.6.0 [238] Thunderbird 38.6.016 February 2016
38.7.0 [239] Thunderbird 38.7.014 March 2016
38.7.1 [240] Thunderbird 38.7.125 March 2016
38.7.2 [241] Thunderbird 38.7.24 April 2016
38.8.0 [242] Thunderbird 38.8.04 May 2016
Thunderbird 45 40.0 [243] 40.0b1 [lower-roman 1] Thunderbird 40.0 Beta 127 July 2015
41.0 [244] 41.0b1Thunderbird 41.0 Beta 110 September 2015
41.0b2Thunderbird 41.0 Beta 217 September 2015
42.0 [245] 42.0b1Thunderbird 42.0 Beta 15 October 2015
42.0b2Thunderbird 42.0 Beta 213 October 2015
43.0 [246] 43.0b1Thunderbird 43.0 Beta 131 December 2015
44.0 [247] 44.0b1Thunderbird 44.0 Beta 114 January 2016
45.0 [248] 45.0b1Thunderbird 45.0 Beta 13 February 2016
45.0b2Thunderbird 45.0 Beta 220 February 2016
45.0b3Thunderbird 45.0 Beta 329 March 2016
45.0b4Thunderbird 45.0 Beta 45 April 2016
45.0 [249] Thunderbird 45.012 April 2016
45.1b1 [250] Thunderbird 45.1 Beta 129 April 2016
45.1.0 [251] Thunderbird 45.1.010 May 2016
45.1.1 [252] Thunderbird 45.1.131 May 2016
45.2b1 [253] Thunderbird 45.2 Beta 120 May 2016
45.2.0 [254] Thunderbird 45.2.030 June 2016
45.3.0 [255] Thunderbird 45.3.030 August 2016
45.4.0 [256] Thunderbird 45.4.04 October 2016
45.5.0 [257] Thunderbird 45.5.021 November 2016
45.5.1 [258] Thunderbird 45.5.130 November 2016
45.6.0 [259] Thunderbird 45.6.028 December 2016
45.7.0 [260] Thunderbird 45.7.025 January 2017
45.7.1 [261] Thunderbird 45.7.17 February 2017
45.8.0 [262] Thunderbird 45.8.07 March 2017
Thunderbird 52 47.0 [263] 47.0b1 [lower-roman 1] Thunderbird 47.0 Beta 110 June 2016
47.0b2Thunderbird 47.0 Beta 217 June 2016
49.0 [264] 49.0b1 [lower-roman 1] Thunderbird 49.0 Beta 12 September 2016
50.0 [265] 50.0b1Thunderbird 50.0 Beta 18 October 2016
50.0b2Thunderbird 50.0 Beta 217 October 2016
50.0b3Thunderbird 50.0 Beta 328 October 2016
51.0 [266] 51.0b1Thunderbird 51.0 Beta 111 January 2017
51.0b2Thunderbird 51.0 Beta 218 January 2017
52.0 [267] 52.0b1Thunderbird 52.0 Beta 127 January 2017
52.0b2Thunderbird 52.0 Beta 210 February 2017
52.0b3Thunderbird 52.0 Beta 315 February 2017
52.0b4Thunderbird 52.0 Beta 424 February 2017
52.0 [268] Thunderbird 52.05 April 2017
52.0.1 [269] Thunderbird 52.0.114 April 2017
52.1.0 [270] Thunderbird 52.1.01 May 2017
52.1.1 [271] Thunderbird 52.1.115 May 2017
52.2.0 [272] Thunderbird 52.2.014 June 2017
52.2.1 [273] Thunderbird 52.2.123 June 2017
52.3.0 [274] Thunderbird 52.3.016 August 2017
52.4.0 [275] Thunderbird 52.4.06 October 2017
52.5.0 [276] Thunderbird 52.5.023 November 2017
52.5.2 [lower-roman 1] [277] Thunderbird 52.5.222 December 2017
52.6.0 [278] Thunderbird 52.6.025 January 2018
52.7.0 [279] Thunderbird 52.7.023 March 2018
52.8.0 [280] Thunderbird 52.8.018 May 2018
52.9.0 [281] Thunderbird 52.9.03 July 2018
52.9.1 [282] Thunderbird 52.9.110 July 2018Last release to support Windows XP, Windows Server 2003 (and R2), Windows Server 2008 and Windows Vista. [283]
Thunderbird 60 53.0 [284] 53.0b1Thunderbird 53.0 Beta 17 April 2017
53.0b2Thunderbird 53.0 Beta 219 April 2017
54.0 [285] 54.0b1Thunderbird 54.0 Beta 118 May 2017
54.0b2Thunderbird 54.0 Beta 224 May 2017
54.0b3Thunderbird 54.0 Beta 32 June 2017
55.0 [286] 55.0b1Thunderbird 55.0 Beta 115 June 2017Unreleased first Thunderbird 55.0 beta release.
55.0b2 [lower-roman 1] Thunderbird 55.0 Beta 215 July 2017
56.0 [287] 56.0b1Thunderbird 56.0 Beta 15 August 2017
56.0b2Thunderbird 56.0 Beta 210 August 2017
56.0b3Thunderbird 56.0 Beta 319 August 2017
56.0b4Thunderbird 56.0 Beta 417 October 2017
57.0 [288] 57.0b1Thunderbird 57.0 Beta 110 November 2017Thunderbird follows Firefox's Quantum design with rectangular tabs and many other changes.
57.0b2Thunderbird 57.0 Beta 218 November 2017
58.0 [289] 58.0b1Thunderbird 58.0 Beta 127 November 2017
58.0b2Thunderbird 58.0 Beta 28 December 2017
58.0b3Thunderbird 58.0 Beta 35 January 2018
59.0 [290] 59.0b1Thunderbird 59.0 Beta 110 February 2018
59.0b2Thunderbird 59.0 Beta 21 March 2018
60.0 [291] 60.0b1Thunderbird 60.0 Beta 126 March 2018
60.0b2Thunderbird 60.0 Beta 25 April 2018
60.0b3Thunderbird 60.0 Beta 314 April 2018
60.0b4Thunderbird 60.0 Beta 421 April 2018
60.0b5Thunderbird 60.0 Beta 527 April 2018
60.0b6Thunderbird 60.0 Beta 64 May 2018
60.0b7Thunderbird 60.0 Beta 78 June 2018
60.0b8Thunderbird 60.0 Beta 821 June 2018
60.0b9Thunderbird 60.0 Beta 926 June 2018
60.0b10Thunderbird 60.0 Beta 1010 July 2018
60.0b11Thunderbird 60.0 Beta 114 September 2018
60.0 [292] Thunderbird 60.06 August 2018Thunderbird follows Firefox' Photon design with rectangular tabs and many other theme changes. Add-ons not marked compatible with Thunderbird 60 disabled.
60.1.0 rc1 [293] Thunderbird 60.1.0 rc112 September 2018Unreleased version 60.1.0 release.
60.2.1 [lower-roman 1] [294] Thunderbird 60.2.12 October 2018
60.3.0 [295] Thunderbird 60.3.031 October 2018
60.3.1 [296] Thunderbird 60.3.115 November 2018
60.3.2 [297] Thunderbird 60.3.230 November 2018
60.3.3 [298] Thunderbird 60.3.35 December 2018
60.4.0 [299] Thunderbird 60.4.020 December 2018
60.5.0 [300] Thunderbird 60.5.029 January 2019
60.5.1 [301] Thunderbird 60.5.114 February 2019
60.5.2 [302] Thunderbird 60.5.225 February 2019
60.5.3 [303] Thunderbird 60.5.35 March 2019
60.6.0 [304] Thunderbird 60.6.019 March 2019
60.6.1 [305] Thunderbird 60.6.125 March 2019
60.7.0 [306] Thunderbird 60.7.021 May 2019
60.7.1 [307] Thunderbird 60.7.113 June 2019
60.7.2 [308] Thunderbird 60.7.220 June 2019
60.8.0 [309] Thunderbird 60.8.09 July 2019
60.9.0 [310] Thunderbird 60.9.06 September 2019
60.9.1 [311] Thunderbird 60.9.15 November 2019
Thunderbird 68 63.0 [312] 63.0b1 [lower-roman 2] Thunderbird 63.0 Beta 111 October 2018Non-restartless legacy add-ons using XUL overlays are only supported if add-on authors have adapted them.
64.0 [313] 64.0b1Thunderbird 64.0 Beta 126 October 2018
64.0b2Thunderbird 64.0 Beta 29 November 2018
64.0b3Thunderbird 64.0 Beta 321 November 2018
64.0b4Thunderbird 64.0 Beta 42 December 2018
65.0 [314] 65.0b1Thunderbird 65.0 Beta 130 December 2018
65.0b2Thunderbird 65.0 Beta 210 January 2019
65.0b3Thunderbird 65.0 Beta 321 January 2019
65.0b4Thunderbird 65.0 Beta 429 January 2019
66.0 [315] 66.0b1Thunderbird 66.0 Beta 112 February 2019
66.0b2Thunderbird 66.0 Beta 221 February 2019
66.0b3Thunderbird 66.0 Beta 38 March 2019
67.0 [316] 67.0b1Thunderbird 67.0 Beta 12 April 2019
67.0b2Thunderbird 67.0 Beta 226 April 2019
67.0b3Thunderbird 67.0 Beta 310 May 2019
68.0 [317] 68.0b1Thunderbird 68.0 Beta 114 June 2019Restartless add-ons and non-restartless legacy add-ons using XUL overlays are only supported if add-on authors have adapted them.
68.0b2Thunderbird 68.0 Beta 224 June 2019
68.0b3Thunderbird 68.0 Beta 31 July 2019
68.0b4Thunderbird 68.0 Beta 48 July 2019
68.0b5Thunderbird 68.0 Beta 518 July 2019
68.0 [318] Thunderbird 68.027 August 2019
68.1.0 [319] Thunderbird 68.1.011 September 2019
68.1.1 [320] Thunderbird 68.1.125 September 2019
68.1.2 [321] Thunderbird 68.1.210 October 2019
68.2.0 [322] Thunderbird 68.2.022 October 2019
68.2.1 [323] Thunderbird 68.2.131 October 2019
68.2.2 [324] Thunderbird 68.2.27 November 2019
68.3.0 [325] Thunderbird 68.3.03 December 2019
68.3.1 [326] Thunderbird 68.3.117 December 2019
68.4.1 [lower-roman 1] [327] Thunderbird 68.4.19 January 2020
68.4.2 [328] Thunderbird 68.4.224 January 2020
68.5.0 [329] Thunderbird 68.5.011 February 2020
68.6.0 [330] Thunderbird 68.6.012 March 2020
68.7.0 [331] Thunderbird 68.7.08 April 2020
68.8.0 [332] Thunderbird 68.8.05 May 2020
68.8.1 [333] Thunderbird 68.8.122 May 2020
68.9.0 [334] Thunderbird 68.9.03 June 2020
68.10.0 [335] Thunderbird 68.10.01 July 2020
68.11.0 [336] Thunderbird 68.11.030 July 2020
68.12.0 [337] Thunderbird 68.12.025 August 2020
68.12.1 [338] Thunderbird 68.12.11 October 2020
Thunderbird 78 69.0 [339] 69.0b1Thunderbird 69.0 Beta 126 July 2019
69.0b2Thunderbird 69.0 Beta 25 August 2019
69.0b3Thunderbird 69.0 Beta 316 August 2019
69.0b4Thunderbird 69.0 Beta 428 August 2019
70.0 [340] 70.0b1Thunderbird 70.0 Beta 111 September 2019
70.0b2Thunderbird 70.0 Beta 222 September 2019
70.0b3Thunderbird 70.0 Beta 34 October 2019
70.0b4Thunderbird 70.0 Beta 417 October 2019
71.0 [341] 71.0b1Thunderbird 71.0 Beta 124 October 2019
71.0b2Thunderbird 71.0 Beta 231 October 2019
71.0b3Thunderbird 71.0 Beta 318 November 2019
71.0b4Thunderbird 71.0 Beta 428 November 2019
72.0 [342] 72.0b1Thunderbird 72.0 Beta 14 December 2019
72.0b2Thunderbird 72.0 Beta 213 December 2019
72.0b3Thunderbird 72.0 Beta 33 January 2020
73.0 [343] 73.0b1Thunderbird 73.0 Beta 117 January 2020
73.0b2Thunderbird 73.0 Beta 231 January 2020
74.0 [344] 74.0b1Thunderbird 74.0 Beta 117 February 2020Add-ons are no longer supported, except for MailExtensions.
74.0b2Thunderbird 74.0 Beta 228 February 2020
75.0 [345] 75.0b1Thunderbird 75.0 Beta 113 March 2020
75.0b2Thunderbird 75.0 Beta 226 March 2020
75.0b3Thunderbird 75.0 Beta 31 April 2020
76.0 [346] 76.0b1Thunderbird 76.0 Beta 19 April 2020
76.0b2Thunderbird 76.0 Beta 222 April 2020
76.0b3Thunderbird 76.0 Beta 329 April 2020
77.0 [347] 77.0b1Thunderbird 77.0 Beta 17 May 2020
77.0b2Thunderbird 77.0 Beta 211 May 2020
77.0b3Thunderbird 77.0 Beta 319 May 2020
78.0 [348] 78.0b1Thunderbird 78.0 Beta 111 June 2020
78.0b2Thunderbird 78.0 Beta 216 June 2020
78.0b3Thunderbird 78.0 Beta 323 June 2020
78.0b4Thunderbird 78.0 Beta 430 June 2020
78.0 [349] Thunderbird 78.017 July 2020Add-ons are no longer supported, except for MailExtensions.
78.0.1 [350] Thunderbird 78.0.121 July 2020
78.1.0 [351] Thunderbird 78.1.030 July 2020
78.1.1 [352] Thunderbird 78.1.16 August 2020
78.2.0 [353] Thunderbird 78.2.025 August 2020
78.2.1 [354] Thunderbird 78.2.129 August 2020OpenPGP enabled by default.
78.2.2 [355] Thunderbird 78.2.210 September 2020
78.3.0 [356] Thunderbird 78.3.024 September 2020
78.3.1 [357] Thunderbird 78.3.126 September 2020
78.3.2 [358] Thunderbird 78.3.27 October 2020
78.3.3 [359] Thunderbird 78.3.316 October 2020
78.4.0 [360] Thunderbird 78.4.020 October 2020
78.4.1 [361] Thunderbird 78.4.16 November 2020
78.4.2 [362] Thunderbird 78.4.29 November 2020
78.4.3 [363] Thunderbird 78.4.311 November 2020
78.5.0 [364] Thunderbird 78.5.017 November 2020
78.5.1 [365] Thunderbird 78.5.12 December 2020
78.6.0 [366] Thunderbird 78.6.015 December 2020
78.6.1 [367] Thunderbird 78.6.111 January 2021
78.7.0 [368] Thunderbird 78.7.026 January 2021
78.7.1 [369] Thunderbird 78.7.15 February 2021CardDAV address books now support OAuth2 and Google Contacts. Thunderbird will no longer allow installation of addons that use the legacy API.
78.8.0 [370] Thunderbird 78.8.023 February 2021
78.8.1 [371] Thunderbird 78.8.18 March 2021
78.9.0 [372] Thunderbird 78.9.023 March 2021
78.9.1 [373] Thunderbird 78.9.18 April 2021
78.10.0 [374] Thunderbird 78.10.019 April 2021
78.10.1 [375] Thunderbird 78.10.14 May 2021
78.10.2 [376] Thunderbird 78.10.217 May 2021
78.11.0 [377] Thunderbird 78.11.02 June 2021
78.12.0 [378] Thunderbird 78.12.013 July 2021
78.13.0 [379] Thunderbird 78.13.010 August 2021
78.14.0 [380] Thunderbird 78.14.07 September 2021Last 78.0 release. 78.15.0, which was scheduled on 5 or 6 October 2021, was canceled. [381]
Thunderbird 91 79.0 [382] 79.0b1Thunderbird 79.0 Beta 116 July 2020
79.0b2Thunderbird 79.0 Beta 221 July 2020
79.0b3Thunderbird 79.0 Beta 327 July 2020
80.0 [383] 80.0b1Thunderbird 80.0 Beta 13 August 2020
80.0b2Thunderbird 80.0 Beta 210 August 2020
80.0b3Thunderbird 80.0 Beta 311 August 2020
80.0b4Thunderbird 80.0 Beta 417 August 2020
80.0b5Thunderbird 80.0 Beta 520 August 2020
81.0 [384] 81.0b1Thunderbird 81.0 Beta 126 August 2020
81.0b2Thunderbird 81.0 Beta 229 August 2020OpenPGP enabled by default.
81.0b3Thunderbird 81.0 Beta 38 September 2020
81.0b4Thunderbird 81.0 Beta 416 September 2020
82.0 [385] 82.0b1Thunderbird 82.0 Beta 125 September 2020
82.0b2Thunderbird 82.0 Beta 21 October 2020
82.0b3Thunderbird 82.0 Beta 316 October 2020
83.0 [386] 83.0b1Thunderbird 83.0 Beta 122 October 2020
83.0b2Thunderbird 83.0 Beta 23 November 2020
83.0b3Thunderbird 83.0 Beta 39 November 2020
84.0 [387] 84.0b1Thunderbird 84.0 Beta 118 November 2020
84.0b2Thunderbird 84.0 Beta 224 November 2020
84.0b3Thunderbird 84.0 Beta 34 December 2020
85.0 [388] 85.0b1Thunderbird 85.0 Beta 118 December 2020
85.0b2Thunderbird 85.0 Beta 223 December 2020
85.0b3Thunderbird 85.0 Beta 34 January 2021
86.0 [389] 86.0b1Thunderbird 86.0 Beta 129 January 2021
86.0b2Thunderbird 86.0 Beta 28 February 2021
86.0b3Thunderbird 86.0 Beta 316 February 2021
87.0 [390] 87.0b1Thunderbird 87.0 Beta 126 February 2021
87.0b2Thunderbird 87.0 Beta 23 March 2021
88.0 [391] 88.0b1Thunderbird 88.0 Beta 126 March 2021
88.0b2Thunderbird 88.0 Beta 22 April 2021
88.0b3Thunderbird 88.0 Beta 314 April 2021
89.0 [392] 89.0b1Thunderbird 89.0 Beta 121 April 2021
89.0b2Thunderbird 89.0 Beta 229 April 2021
89.0b3Thunderbird 89.0 Beta 36 May 2021
89.0b4Thunderbird 89.0 Beta 413 May 2021
90.0 [393] 90.0b1Thunderbird 90.0 Beta 12 June 2021
90.0b2Thunderbird 90.0 Beta 217 June 2021
90.0b3Thunderbird 90.0 Beta 329 June 2021
91.0 [394] 91.0b1Thunderbird 91.0 Beta 113 July 2021
91.0b2Thunderbird 91.0 Beta 220 July 2021
91.0b3Thunderbird 91.0 Beta 322 July 2021
91.0b4Thunderbird 91.0 Beta 426 July 2021
91.0b5Thunderbird 91.0 Beta 529 July 2021
91.0b6Thunderbird 91.0 Beta 63 August 2021
91.0 [395] Thunderbird 91.011 August 2021
91.0.1 [396] Thunderbird 91.0.117 August 2021
91.0.2 [397] Thunderbird 91.0.220 August 2021
91.0.3 [398] Thunderbird 91.0.326 August 2021
91.1.0 [399] Thunderbird 91.1.07 September 2021
91.1.1 [400] Thunderbird 91.1.116 September 2021
91.1.2 [401] Thunderbird 91.1.227 September 2021
91.2.0 [402] Thunderbird 91.2.05 October 2021
91.2.1 [403] Thunderbird 91.2.121 October 2021
91.3.0 [404] Thunderbird 91.3.03 November 2021
91.3.1 [405] Thunderbird 91.3.115 November 2021
91.3.2 [406] Thunderbird 91.3.219 November 2021
91.4.0 [407] Thunderbird 91.4.07 December 2021
91.4.1 [408] Thunderbird 91.4.117 December 2021
91.5.0 [409] Thunderbird 91.5.011 January 2022
91.5.1 [410] Thunderbird 91.5.124 January 2022
91.6.0 [411] Thunderbird 91.6.08 February 2022
91.6.1 [412] Thunderbird 91.6.115 February 2022
91.6.2 [413] Thunderbird 91.6.25 March 2022
91.7.0 [414] Thunderbird 91.7.08 March 2022
91.8.0 [415] Thunderbird 91.8.05 April 2022
91.8.1 [416] Thunderbird 91.8.118 April 2022
91.9.0 [417] Thunderbird 91.9.03 May 2022
91.9.1 [418] Thunderbird 91.9.120 May 2022
91.10.0 [419] Thunderbird 91.10.031 May 2022
91.11.0 [420] Thunderbird 91.11.028 June 2022
91.12.0 [421] Thunderbird 91.12.026 July 2022
91.13.0 [422] Thunderbird 91.13.023 August 2022
91.13.1 [423] Thunderbird 91.13.119 September 2022Security patches backported from 102.2.1. It is the final release of Thunderbird 91.
Thunderbird 102 92.0 [424] 92.0b1Thunderbird 92.0 Beta 113 August 2021
92.0b2Thunderbird 92.0 Beta 216 August 2021
92.0b3Thunderbird 92.0 Beta 323 August 2021
92.0b4Thunderbird 92.0 Beta 426 August 2021
92.0b5Thunderbird 92.0 Beta 52 September 2021
93.0 [425] 93.0b1Thunderbird 93.0 Beta 19 September 2021
93.0b2Thunderbird 93.0 Beta 213 September 2021
93.0b3Thunderbird 93.0 Beta 321 September 2021
93.0b4Thunderbird 93.0 Beta 424 September 2021
93.0b5Thunderbird 93.0 Beta 528 September 2021
94.0 [426] 94.0b1Thunderbird 94.0 Beta 15 October 2021
94.0b2Thunderbird 94.0 Beta 29 October 2021
94.0b3Thunderbird 94.0 Beta 315 October 2021
94.0b4Thunderbird 94.0 Beta 421 October 2021
94.0b5Thunderbird 94.0 Beta 528 October 2021
95.0 [427] 95.0b1Thunderbird 95.0 Beta 13 November 2021
95.0b2Thunderbird 95.0 Beta 29 November 2021
95.0b3Thunderbird 95.0 Beta 313 November 2021
95.0b4Thunderbird 95.0 Beta 423 November 2021
95.0b5Thunderbird 95.0 Beta 529 November 2021
96.0 [428] 96.0b1Thunderbird 96.0 Beta 17 December 2021
96.0b2Thunderbird 96.0 Beta 213 December 2021
96.0b3Thunderbird 96.0 Beta 320 December 2021
96.0b4Thunderbird 96.0 Beta 44 January 2022
97.0 [429] 97.0b1Thunderbird 97.0 Beta 111 January 2022
97.0b2Thunderbird 97.0 Beta 217 January 2022
97.0b3Thunderbird 97.0 Beta 324 January 2022
98.0 [430] 98.0b1Thunderbird 98.0 Beta 19 February 2022
98.0b2Thunderbird 98.0 Beta 214 February 2022
98.0b3Thunderbird 98.0 Beta 31 March 2022
99.0 [431] 99.0b1Thunderbird 99.0 Beta 110 March 2022
99.0b2Thunderbird 99.0 Beta 221 March 2022
100.0 [432] 100.0b1Thunderbird 100.0 Beta 16 April 2022
100.0b2Thunderbird 100.0 Beta 211 April 2022
100.0b3Thunderbird 100.0 Beta 319 April 2022
100.0b4Thunderbird 100.0 Beta 426 April 2022
101.0 [433] 101.0b1Thunderbird 101.0 Beta 14 May 2022
101.0b2Thunderbird 101.0 Beta 212 May 2022
101.0b3Thunderbird 101.0 Beta 317 May 2022
101.0b4Thunderbird 101.0 Beta 420 May 2022
102.0 [434] 102.0b1Thunderbird 102.0 Beta 11 June 2022
102.0b2Thunderbird 102.0 Beta 23 June 2022
102.0b3Thunderbird 102.0 Beta 36 June 2022
102.0b4Thunderbird 102.0 Beta 49 June 2022
102.0b5Thunderbird 102.0 Beta 514 June 2022
102.0b6Thunderbird 102.0 Beta 616 June 2022
102.0b7Thunderbird 102.0 Lucky Beta 718 June 2022
102.0b8Thunderbird 102.0 Super Beta 822 June 2022
102.0 [435] Thunderbird 102.029 June 2022OpenPGP improvements, OAuth2 support for Google Talk, initial support for matrix protocol.
102.0.1 [436] Thunderbird 102.0.15 July 2022
102.0.2 [437] Thunderbird 102.0.212 July 2022
102.0.3 [438] Thunderbird 102.0.320 July 2022
102.1.0 [439] Thunderbird 102.1.026 July 2022
102.1.1 [440] Thunderbird 102.1.18 August 2022
102.1.2 [441] Thunderbird 102.1.29 August 2022
102.2.0 [442] Thunderbird 102.2.023 August 2022
102.2.1 [443] Thunderbird 102.2.11 September 2022
102.2.2 [444] Thunderbird 102.2.27 September 2022
102.3.0 [445] Thunderbird 102.3.020 September 2022
102.3.1 [446] Thunderbird 102.3.128 September 2022
102.3.2 [447] Thunderbird 102.3.27 October 2022
102.3.3 [448] Thunderbird 102.3.312 October 2022
102.4.0 [449] Thunderbird 102.4.019 October 2022
102.4.1 [450] Thunderbird 102.4.126 October 2022
102.4.2 [451] Thunderbird 102.4.24 November 2022
102.5.0 [452] Thunderbird 102.5.015 November 2022
102.5.1 [453] Thunderbird 102.5.11 December 2022
102.6.0 [454] Thunderbird 102.6.013 December 2022
102.6.1 [455] Thunderbird 102.6.120 December 2022
102.7.0 [456] Thunderbird 102.7.019 January 2023
102.7.1 [457] Thunderbird 102.7.11 February 2023
102.7.2 [458] Thunderbird 102.7.27 February 2023
102.8.0 [459] Thunderbird 102.8.015 February 2023
102.9.0 [460] Thunderbird 102.9.014 March 2023
102.9.1 [461] Thunderbird 102.9.128 March 2023
102.10.0 [462] Thunderbird 102.10.011 April 2023
102.10.1 [463] Thunderbird 102.10.124 April 2023
102.11.0 [464] Thunderbird 102.11.010 May 2023
102.11.1 [465] Thunderbird 102.11.125 May 2023
102.11.2 [466] Thunderbird 102.11.227 May 2023Contains fixes for POP3 client regressions first present in version 102.11.1.
102.12.0 [467] Thunderbird 102.12.07 June 2023
102.13.0 [468] Thunderbird 102.13.05 July 2023
102.13.1 [469] Thunderbird 102.13.126 July 2023
102.14.0 [470] Thunderbird 102.14.02 August 2023
102.15.0 [471] Thunderbird 102.15.030 August 2023
102.15.1 [472] Thunderbird 102.15.112 September 2023Final release of Thunderbird 102. Upgrade is available starting with version 115.2.3.
Thunderbird 115 103.0 [473] 103.0b1Thunderbird 103.0 Beta 129 June 2022
103.0b2Thunderbird 103.0 Beta 21 July 2022
103.0b3Thunderbird 103.0 Beta 36 July 2022
103.0b4Thunderbird 103.0 Beta 48 July 2022
103.0b5Thunderbird 103.0 Beta 513 July 2022
103.0b6Thunderbird 103.0 Beta 619 July 2022
104.0 [474] 104.0b1Thunderbird 104.0 Beta 127 July 2022
104.0b2Thunderbird 104.0 Beta 22 August 2022
104.0b3Thunderbird 104.0 Beta 310 August 2022
104.0b4Thunderbird 104.0 Beta 416 August 2022
105.0 [475] 105.0b1Thunderbird 105.0 Beta 124 August 2022
105.0b2Thunderbird 105.0 Beta 21 September 2022
105.0b3Thunderbird 105.0 Beta 36 September 2022
105.0b4Thunderbird 105.0 Beta 413 September 2022
106.0 [476] 106.0b1Thunderbird 106.0 Beta 121 September 2022
106.0b2Thunderbird 106.0 Beta 227 September 2022
106.0b3Thunderbird 106.0 Beta 328 September 2022
106.0b4Thunderbird 106.0 Beta 43 October 2022
106.0b5Thunderbird 106.0 Beta 510 October 2022
107.0 [477] 107.0b1Thunderbird 107.0 Beta 119 October 2022
107.0b2Thunderbird 107.0 Beta 224 October 2022
107.0b3Thunderbird 107.0 Beta 331 October 2022
107.0b4Thunderbird 107.0 Beta 47 November 2022
108.0 [478] 108.0b1Thunderbird 108.0 Beta 115 November 2022
108.0b2Thunderbird 108.0 Beta 229 November 2022
108.0b3Thunderbird 108.0 Beta 35 December 2022
109.0 [479] 109.0b1Thunderbird 109.0 Beta 114 December 2022
109.0b2Thunderbird 109.0 Beta 219 December 2022
109.0b3Thunderbird 109.0 Beta 34 January 2023
109.0b4Thunderbird 109.0 Beta 49 January 2023
110.0 [480] 110.0b1Thunderbird 110.0 Beta 119 January 2023
110.0b2Thunderbird 110.0 Beta 224 January 2023
110.0b3Thunderbird 110.0 Beta 331 January 2023
110.0b4Thunderbird 110.0 Beta 47 February 2023
111.0 [481] 111.0b1Thunderbird 111.0 Beta 127 February 2023Initial version of Supernova UI.
111.0b2Thunderbird 111.0 Beta 21 March 2023
111.0b3Thunderbird 111.0 Beta 37 March 2023
111.0b4Thunderbird 111.0 Beta 49 March 2023Unreleased beta version.
112.0 [482] 112.0b1Thunderbird 112.0 Beta 115 March 2023
112.0b2Thunderbird 112.0 Beta 221 March 2023
112.0b3Thunderbird 112.0 Beta 323 March 2023
112.0b4Thunderbird 112.0 Beta 427 March 2023
112.0b5Thunderbird 112.0 Beta 529 March 2023
112.0b6Thunderbird 112.0 Beta 63 April 2023
112.0b7Thunderbird 112.0 Beta 75 April 2023
113.0 [483] 113.0b1Thunderbird 113.0 Beta 111 April 2023
113.0b2Thunderbird 113.0 Beta 218 April 2023
113.0b3Thunderbird 113.0 Beta 320 April 2023
113.0b4Thunderbird 113.0 Beta 424 April 2023
113.0b5Thunderbird 113.0 Beta 526 April 2023
113.0b6Thunderbird 113.0 Beta 63 May 2023
114.0 [484] 114.0b1Thunderbird 114.0 Beta 112 May 2023
114.0b2Thunderbird 114.0 Beta 216 May 2023
114.0b3Thunderbird 114.0 Beta 317 May 2023
114.0b4Thunderbird 114.0 Beta 424 May 2023
114.0b5Thunderbird 114.0 Beta 525 May 2023
114.0b6Thunderbird 114.0 Beta 631 May 2023
115.0 [485] 115.0b1Thunderbird 115.0 Beta 18 June 2023
115.0b2Thunderbird 115.0 Beta 214 June 2023
115.0b3Thunderbird 115.0 Beta 315 June 2023
115.0b4Thunderbird 115.0 Beta 421 June 2023
115.0b5Thunderbird 115.0 Beta 527 June 2023
115.0b6Thunderbird 115.0 Beta 629 June 2023
115.0 [486] Thunderbird 115.0 "SuperNova"11 July 2023New visual appearance, called Supernova UI, various OpenPGP improvements OAuth2 support for Fastmail, various bug fixes. Only available as direct download.
115.0.1 [487] Thunderbird 115.0.1 "SuperNova"20 July 2023
115.1.0 [488] Thunderbird 115.1.0 "SuperNova"1 August 2023
115.1.1 [489] Thunderbird 115.1.1 "SuperNova"15 August 2023
115.2.0 [490] Thunderbird 115.2.0 "SuperNova"30 August 2023
115.2.1 [491] Thunderbird 115.2.1 "SuperNova"11 September 2023
115.2.2 [492] Thunderbird 115.2.2 "SuperNova"12 September 2023
115.2.3 [493] Thunderbird 115.2.3 "SuperNova"20 September 2023
115.3.0 [494] Thunderbird 115.3.0 "SuperNova"26 September 2023
115.3.1 [495] Thunderbird 115.3.1 "SuperNova"29 September 2023
115.3.2 [496] Thunderbird 115.3.2 "SuperNova"11 October 2023
115.3.3 [497] Thunderbird 115.3.3 "SuperNova"18 October 2023
115.4.0Thunderbird 115.4.0 "SuperNova"24 October 2023Unreleased version.
115.4.1 [498] Thunderbird 115.4.1 "SuperNova"25 October 2023
115.4.2 [499] Thunderbird 115.4.2 "SuperNova"6 November 2023
115.4.3 [500] Thunderbird 115.4.3 "SuperNova"16 November 2023
115.5.0 [501] Thunderbird 115.5.0 "SuperNova"21 November 2023
115.5.1 [502] Thunderbird 115.5.1 "SuperNova"27 November 2023
115.5.2 [503] Thunderbird 115.5.2 "SuperNova"11 December 2023
115.6.0 [504] Thunderbird 115.6.0 "SuperNova"19 December 2023
115.6.1 [505] Thunderbird 115.6.1 "SuperNova"8 January 2024
115.7.0 [506] Thunderbird 115.7.0 "SuperNova"22 January 2024
115.8.0 [507] Thunderbird 115.8.0 "SuperNova"20 February 2024
115.8.1 [508] Thunderbird 115.8.1 "SuperNova"1 March 2024
115.9.0 [509] Thunderbird 115.9.0 "SuperNova"19 March 2024
115.10.0 [510] Thunderbird 115.10.0 "SuperNova"16 April 2024
115.10.1 [511] Thunderbird 115.10.1 "SuperNova"18 April 2024
115.11.0Thunderbird 115.11.0 "SuperNova"TBA
115.12.0Thunderbird 115.12.0 "SuperNova"TBA
115.13.0Thunderbird 115.13.0 "SuperNova"TBA
115.14.0Thunderbird 115.14.0 "SuperNova"TBA
115.15.0Thunderbird 115.15.0 "SuperNova"TBA
Thunderbird 128 [512] 116.0 [513] 116.0b1Thunderbird 116.0 Beta 15 July 2023
116.0b2Thunderbird 116.0 Beta 210 July 2023
116.0b3Thunderbird 116.0 Beta 312 July 2023
116.0b4Thunderbird 116.0 Beta 417 July 2023
116.0b5Thunderbird 116.0 Beta 519 July 2023
116.0b6Thunderbird 116.0 Beta 624 July 2023
116.0b7Thunderbird 116.0 Beta 727 July 2023
117.0 [514] 117.0b1Thunderbird 117.0 Beta 12 August 2023
117.0b2Thunderbird 117.0 Beta 27 August 2023
117.0b3Thunderbird 117.0 Beta 39 August 2023
117.0b4Thunderbird 117.0 Beta 414 August 2023
117.0b5Thunderbird 117.0 Beta 519 August 2023Unreleased beta version.
117.0b6Thunderbird 117.0 Beta 622 August 2023Beta 5 canceled.
118.0 [515] 118.0b1Thunderbird 118.0 Beta 130 August 2023
118.0b2Thunderbird 118.0 Beta 26 September 2023
118.0b3Thunderbird 118.0 Beta 311 September 2023
118.0b4Thunderbird 118.0 Beta 413 September 2023
118.0b5Thunderbird 118.0 Beta 520 September 2023
118.0b6Thunderbird 118.0 Beta 622 September 2023
119.0 [516] 119.0b1Thunderbird 119.0 Beta 127 September 2023
119.0b2Thunderbird 119.0 Beta 22 October 2023
119.0b3Thunderbird 119.0 Beta 35 October 2023
119.0b4Thunderbird 119.0 Beta 410 October 2023
119.0b5Thunderbird 119.0 Beta 512 October 2023
119.0b6Thunderbird 119.0 Beta 616 October 2023
120.0 [517] 120.0b1Thunderbird 120.0 Beta 125 October 2023
120.0b2Thunderbird 120.0 Beta 231 October 2023
120.0b3Thunderbird 120.0 Beta 32 November 2023
120.0b4Thunderbird 120.0 Beta 47 November 2023
120.0b5Thunderbird 120.0 Beta 58 November 2023
120.0b6Thunderbird 120.0 Beta 614 November 2023
120.0b7Thunderbird 120.0 Beta 715 November 2023
121.0 [518] 121.0b1Thunderbird 121.0 Beta 122 November 2023
121.0b2Thunderbird 121.0 Beta 227 November 2023
121.0b3Thunderbird 121.0 Beta 329 November 2023
121.0b4Thunderbird 121.0 Beta 45 December 2023
121.0b5Thunderbird 121.0 Beta 56 December 2023
121.0b6Thunderbird 121.0 Beta 611 December 2023
122.0 [519] 122.0b1Thunderbird 122.0 Beta 120 December 2023
122.0b2Thunderbird 122.0 Beta 22 January 2024
122.0b3Thunderbird 122.0 Beta 39 January 2024
122.0b4Thunderbird 122.0 Beta 410 January 2024
123.0 [520] 123.0b1Thunderbird 123.0 Beta 125 January 2024
123.0b2Thunderbird 123.0 Beta 229 January 2024
123.0b3Thunderbird 123.0 Beta 36 February 2024
123.0b4Thunderbird 123.0 Beta 47 February 2024
123.0b5Thunderbird 123.0 Beta 512 February 2024
124.0 [521] 124.0b1Thunderbird 124.0 Beta 121 February 2024
124.0b2Thunderbird 124.0 Beta 227 February 2024
124.0b3Thunderbird 124.0 Beta 328 February 2024
124.0b4Thunderbird 124.0 Beta 44 March 2024
124.0b5Thunderbird 124.0 Beta 511 March 2024
125.0 [522] 125.0b1Thunderbird 125.0 Beta 119 March 2024
125.0b2Thunderbird 125.0 Beta 226 March 2024
125.0b3Thunderbird 125.0 Beta 31 April 2024
125.0b4Thunderbird 125.0 Beta 43 April 2024
125.0b5Thunderbird 125.0 Beta 58 April 2024
126.0 [523] 126.0b1Thunderbird 126.0 Beta 117 April 2024
126.0b2Thunderbird 126.0 Beta 2TBA
126.0b3Thunderbird 126.0 Beta 3TBA
126.0b4Thunderbird 126.0 Beta 4TBA
126.0b5Thunderbird 126.0 Beta 5TBA
127.0127.0b1Thunderbird 127.0 Beta 1TBA
127.0b2Thunderbird 127.0 Beta 2TBA
127.0b3Thunderbird 127.0 Beta 3TBA
127.0b4Thunderbird 127.0 Beta 4TBA
127.0b5Thunderbird 127.0 Beta 5TBA
128.0128.0b1Thunderbird 128.0 Beta 1TBA
128.0b2Thunderbird 128.0 Beta 2TBA
128.0b3Thunderbird 128.0 Beta 3TBA
128.0b4Thunderbird 128.0 Beta 4TBA
128.0b5Thunderbird 128.0 Beta 5TBA
NameGecko versionVersionCodenameRelease dateSignificant changes

Notes

  1. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 This release skips a version number which was not released.
  2. 1 2 3 4 5 This release skips a few version numbers which were not released.
  3. ↑ Mozilla changed its release schedule for Thunderbird as of version 17, [187] which resulted in omitted major version numbers between successive releases.

Release compatibility

Operating system Latest stable versionSupport status
Windows 10, Server 2016 and later 115.10.1 (x86-64)2018–present
115.10.1 (IA-32)2015–present
7, 8, 8.1, Server 2008 R2, 2012, 2012 R2 115.10.1 (x86-64)2018–2024
115.10.1 (IA-32)2009–2024
XP (SP2+), Server 2003 (SP1+), Vista, Server 2008 52.9.1 [283] 2003–2018
2000, XP (RTM-SP1), Server 2003 (RTM) 12.0.1 2003–2012
10.0.12esr 2003–2013
NT 4.0 / 98 / ME 2.0.0.24 2003–2010
95 1.5.0.14 2003–2007
macOS 11 and later (arm64) 115.10.1 2021–present
10.15 and later (x86-64)2019–present
10.12 – 10.14 2016–2024
10.9 – 10.11 78.14.0 2013–2021
10.6 – 10.8 45.8.0 2009–2017
10.5 (IA-32, x86-64) 16.0.2 2007–2012
10.0.12esr 2007–2013
10.4 – 10.5 (PPC) 3.1.20 2005–2012
10.2 – 10.3 2.0.0.24 2003–2010
10.0 – 10.1 1.0.8 2003–2006
Linux desktop [lower-alpha 1] x86_64 115.10.1 2011–present
i686 115.10.1 2003–present
ARM [524] 115.9.0 Unofficial
Solaris 10 – 11 and OpenSolaris 115.6.0 2005–
8 – 9 2.0.0.24 2003–2010
Sun Java Desktop System 1.0.2 2004–2005
OS/2 (including ArcaOS and eComStation) 8.0 2003–2011
10.0.12 [525] Unofficial
45.8.0 [526] Unofficial
  1. ↑ with some libraries e.g. GTK+ 3.14
Legend:
Old version
Older version, still maintained
Latest version
Latest preview version
Future release

Development history

On 23 December 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 14 March 2006. The latest version of Lightning was 6.2.6.1, released on March 25, 2019 for Thunderbird 68.x. Since Thunderbird 78 Lightning is no longer a separate extension but an internal part of Thunderbird itself.

On 11 October 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." [527] The project is code-named Penelope. An unofficial Eudora/Penelope forum is accessible via web or newsreader. [528]

On 26 July 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. [529]

On 17 September 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 19 February 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 8 December 2009.

On 6 July 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. [530]

See also

Notes

  1. ↑ Hicks, Jon (20 April 2004). "Thunderbird". Hicks Journal. Retrieved 5 December 2016.
  2. ↑ "Mozilla Thunderbird 0.1 Release Notes". website-archive.mozilla.org.
  3. ↑ "Thunderbird 0.2 Release Notes". mozillamessaging.com. 3 September 2003. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  4. ↑ "Thunderbird 0.3 Release Notes". mozillamessaging.com. 17 October 2003. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  5. ↑ "Thunderbird 0.4 Release Notes". mozillamessaging.com. 7 December 2003. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  6. ↑ "Thunderbird 0.5 Release Notes". mozillamessaging.com. 9 February 2004. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  7. ↑ "Thunderbird 0.6 Release Notes". mozillamessaging.com. 3 May 2004. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  8. ↑ "Directory Listing: /pub/thunderbird/releases/0.7rc/". 14 June 2004. Retrieved 16 October 2015.
  9. ↑ "Thunderbird 0.7 Release Notes". mozillamessaging.com. 16 June 2004. Archived from the original on 20 March 2012. Retrieved 12 February 2011.
  10. ↑ "Thunderbird 0.7.3 Release Announcement". rumblingedge.com. 4 August 2004. Archived from the original on 6 January 2009. Retrieved 7 July 2011.
  11. ↑ "Thunderbird 0.8 Release Notes". mozillamessaging.com. 14 September 2004. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  12. ↑ "Thunderbird 0.9 Release Notes". mozillamessaging.com. 3 November 2004. Archived from the original on 20 March 2012. Retrieved 12 February 2011.
  13. ↑ "Thunderbird 1.0 RC 1 Release Announcement". rumblingedge.com. 1 December 2004. Archived from the original on 6 January 2009. Retrieved 7 July 2011.
  14. ↑ "Thunderbird 1.0 Release Notes". mozillamessaging.com. 7 December 2004. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  15. ↑ "Thunderbird 1.0.2 Release Notes". mozillamessaging.com. 21 March 2005. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  16. ↑ "Thunderbird 1.0.5 Release Notes". mozillamessaging.com. 13 July 2005. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  17. ↑ "Thunderbird 1.0.6 Release Notes". mozillamessaging.com. 19 July 2005. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  18. ↑ "Thunderbird 1.0.7 Release Notes". mozillamessaging.com. 29 September 2005. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  19. ↑ "Thunderbird 1.0.8 Release Notes". mozillamessaging.com. 21 April 2006. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  20. ↑ "Thunderbird 1.1 Alpha 1 Release Announcement". rumblingedge.com. 2 June 2005. Archived from the original on 4 October 2011. Retrieved 7 July 2011.
  21. ↑ "Thunderbird 1.1 Alpha 2 Release Announcement". rumblingedge.com. 15 July 2005. Archived from the original on 7 January 2009. Retrieved 7 July 2011.
  22. ↑ "Thunderbird 1.5 Beta 1 Release Notes". mozillamessaging.com. 9 September 2005. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  23. ↑ "Thunderbird 1.5 Beta 2 Release Notes". mozillamessaging.com. 7 October 2005. Archived from the original on 21 April 2012. Retrieved 7 July 2011.
  24. ↑ "Thunderbird 1.5 RC 1 Release Announcement". rumblingedge.com. 5 November 2005. Archived from the original on 6 January 2009. Retrieved 7 July 2011.
  25. ↑ "Thunderbird 1.5 RC 2 Release Announcement". rumblingedge.com. 21 December 2005. Archived from the original on 6 January 2009. Retrieved 7 July 2011.
  26. ↑ "Thunderbird 1.5 Release Notes". mozillamessaging.com. 11 January 2006. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  27. ↑ "Thunderbird 1.5.0.2 Release Notes". mozillamessaging.com. 21 April 2006. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  28. ↑ "Thunderbird 1.5.0.4 Release Notes". mozillamessaging.com. 1 June 2006. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  29. ↑ "Thunderbird 1.5.0.5 Release Notes". mozillamessaging.com. 27 July 2006. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  30. ↑ "Thunderbird 1.5.0.7 Release Notes". mozillamessaging.com. 14 September 2006. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  31. ↑ "Thunderbird 1.5.0.8 Release Notes". mozillamessaging.com. 8 November 2006. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  32. ↑ "Thunderbird 1.5.0.9 Release Notes". mozillamessaging.com. 19 December 2006. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  33. ↑ "Thunderbird 1.5.0.10 Release Notes". mozillamessaging.com. 1 March 2007. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  34. ↑ "Thunderbird 1.5.0.12 Release Notes". mozillamessaging.com. 30 May 2007. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  35. ↑ "Thunderbird 1.5.0.13 Release Notes". mozillamessaging.com. 23 August 2007. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  36. ↑ "Thunderbird 1.5.0.14 Release Notes". mozillamessaging.com. 19 December 2007. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  37. ↑ "Thunderbird 2.0 Alpha 1 Release Notes". mozillamessaging.com. 28 July 2006. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  38. ↑ "Thunderbird 2.0 Beta 1 Release Notes". mozillamessaging.com. 12 December 2006. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  39. ↑ "Thunderbird 2.0 Beta 2 Release Notes". mozillamessaging.com. 23 January 2007. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  40. ↑ "Thunderbird 2.0 RC 1 Release Announcement". rumblingedge.com. 6 April 2007. Archived from the original on 7 March 2009. Retrieved 7 July 2011.
  41. ↑ "Thunderbird 2.0 Release Notes". mozillamessaging.com. 18 April 2007. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  42. ↑ "Thunderbird 2.0.0.4 Release Notes". mozillamessaging.com. 14 June 2007. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  43. ↑ "Thunderbird 2.0.0.5 Release Notes". mozillamessaging.com. 19 July 2007. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  44. ↑ "Thunderbird 2.0.0.6 Release Notes". mozillamessaging.com. 1 August 2007. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  45. ↑ "Thunderbird 2.0.0.9 Release Notes". mozillamessaging.com. 14 November 2007. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  46. ↑ "Thunderbird 2.0.0.12 Release Notes". mozillamessaging.com. 26 February 2008. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  47. ↑ "Thunderbird 2.0.0.14 Release Notes". mozillamessaging.com. 1 May 2008. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  48. ↑ "Thunderbird 2.0.0.16 Release Notes". mozillamessaging.com. 23 July 2008. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  49. ↑ "Thunderbird 2.0.0.17 Release Notes". mozillamessaging.com. 25 September 2008. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  50. ↑ "Thunderbird 2.0.0.18 Release Notes". mozillamessaging.com. 19 November 2008. Archived from the original on 20 March 2012. Retrieved 7 July 2011.
  51. ↑ "Thunderbird 2.0.0.19 Release Notes". mozillamessaging.com. 30 December 2008. Archived from the original on 20 April 2012. Retrieved 7 July 2011.
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  56. ↑ "Shredder Alpha 1 Release Notes". mozillamessaging.com. 13 May 2008. Archived from the original on 3 May 2012. Retrieved 7 July 2011.
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  61. ↑ "Thunderbird 3.0 Beta 3 Release Notes". mozillamessaging.com. 21 July 2009. Archived from the original on 3 April 2012. Retrieved 7 July 2011.
  62. ↑ "Thunderbird 3.0 Beta 4 Release Notes". mozillamessaging.com. 22 September 2009. Archived from the original on 21 April 2012. Retrieved 7 July 2011.
  63. ↑ "Thunderbird 3.0 RC 1 Release Notes". mozillamessaging.com. 24 November 2009. Archived from the original on 15 April 2012. Retrieved 7 July 2011.
  64. ↑ "Thunderbird 3.0 RC 2 Release Notes". mozillamessaging.com. 1 December 2009. Archived from the original on 3 April 2012. Retrieved 7 July 2011.
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<span class="mw-page-title-main">SpiderMonkey</span> JavaScript and WebAssembly engine maintained by the Mozilla Foundation

SpiderMonkey is an open-source JavaScript and WebAssembly engine by the Mozilla Foundation.

<span class="mw-page-title-main">Firefox</span> Free and open-source web browser by Mozilla

Mozilla Firefox, or simply Firefox, is a free and open-source web browser developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation. It uses the Gecko rendering engine to display web pages, which implements current and anticipated web standards. Firefox is available for Windows 10 or later versions, macOS, and Linux. Its unofficial ports are available for various Unix and Unix-like operating systems, including FreeBSD, OpenBSD, NetBSD, illumos, and Solaris Unix. It is also available for Android and iOS. However, as with all other iOS web browsers, the iOS version uses the WebKit layout engine instead of Gecko due to platform requirements. An optimized version is also available on the Amazon Fire TV as one of the two main browsers available with Amazon's Silk Browser.

<span class="mw-page-title-main">Mozilla Thunderbird</span> Free and open-source email client by Mozilla

Mozilla Thunderbird is free and open-source email client software which also functions as a full personal information manager with a calendar and contactbook, as well as an RSS feed reader, chat client (IRC/XMPP/Matrix), and news client. Available cross-platform, it is operated by the Mozilla Foundation's subsidiary MZLA Technologies Corporation. Thunderbird is an independent, community-driven project that is managed and overseen by the Thunderbird Council, which is elected by the Thunderbird Community. The project strategy was originally modeled after that of Mozilla's Firefox web browser and is an interface built on top of that web browser.

The Mozilla Foundation is an American non-profit organization that exists to support and collectively lead the open source Mozilla project. Founded in July 2003, the organization sets the policies that govern development, operates key infrastructure and controls Mozilla trademarks and copyrights. It owns two taxable subsidiaries: the Mozilla Corporation, which employs many Mozilla developers and coordinates releases of the Mozilla Firefox web browser, and MZLA Technologies Corporation, which employs developers to work on the Mozilla Thunderbird email client and coordinate its releases. The Mozilla Foundation was founded by the Netscape-affiliated Mozilla Organization. The organization is currently based in the Silicon Valley city of Mountain View, California, United States.

<span class="mw-page-title-main">SeaMonkey</span> Internet suite

SeaMonkey is a free and open-source Internet suite. It is the continuation of the former Mozilla Application Suite, based on the same source code, which itself grew out of Netscape Communicator and formed the base of Netscape 6 and Netscape 7.

<span class="mw-page-title-main">Lightning (software)</span> Free software

Lightning is a project from the Mozilla Foundation originally designed as an extension ("add-on") that adds calendar and scheduling functionality to the Mozilla Thunderbird mail client and SeaMonkey internet suite. It superseded the previous Mozilla Sunbird and the older Mozilla Calendar extension. With version 38 of Thunderbird, the Lightning add-on was integrated and preloaded by default; since version 78 of Thunderbird, Lightning is part of Thunderbird and no longer an add-on extension. Lightning is compatible with iCalendar calendars.

Eudora OSE, formerly codenamed Penelope, is an extension for the Mozilla Thunderbird email client software implementing some features of Eudora.

<span class="mw-page-title-main">Firefox 4</span> Firefox browser released in 2011

Mozilla Firefox 4 is a version of the Firefox web browser, released on March 22, 2011. The first beta was made available on July 6, 2010; Release Candidate 2 was released on March 18, 2011. It was codenamed Tumucumaque, and was Firefox's last large release cycle. The Mozilla team planned smaller and quicker releases following other browser vendors. The primary goals for this version included improvements in performance, standards support, and user interface.

<span class="mw-page-title-main">Firefox for Android</span> Android web browser by Mozilla

Firefox for Android is a web browser developed by Mozilla for Android smartphones and tablet computers. As with its desktop version, it uses the Gecko layout engine, and supports features such as synchronization with Firefox Sync, and add-ons.

The following is a comparison of RSS feed aggregators. Often e-mail programs and web browsers have the ability to display RSS feeds. They are listed here, too.

<span class="mw-page-title-main">Firefox 3.5</span> Firefox web browser version

Mozilla Firefox 3.5 is a version of the Firefox web browser released in June 2009, adding a variety of new features to Firefox. Version 3.5 was touted as being twice as fast as 3.0. It includes private browsing, has tear-off tabs, and uses the Gecko 1.9.1 engine. It was codenamed Shiretoko during development, and was initially numbered Firefox 3.1 before Mozilla developers decided to change the version to 3.5, to reflect the inclusion of a significantly greater scope of changes than were originally planned. It is the last major version to support X BitMap images.

<span class="mw-page-title-main">Firefox 3.6</span> Firefox web browser version

Mozilla Firefox 3.6 is a version of the Firefox web browser released in January 2010. The release's main improvement over Firefox 3.5 is improved performance. It uses the Gecko 1.9.2 engine, which improves compliance with web standards. It was codenamed Namoroka. In this version, support for X BitMap images was dropped.

A lightweight web browser is a web browser that sacrifices some of the features of a mainstream web browser in order to reduce the consumption of system resources, and especially to minimize the memory footprint.

Firefox was created by Dave Hyatt and Blake Ross as an experimental branch of the Mozilla browser, first released as Firefox 1.0 on November 9, 2004. Starting with version 5.0, a rapid release cycle was put into effect, resulting in a new major version release every six weeks. This was gradually accelerated further in late 2019, so that new major releases occur on four-week cycles starting in 2020.

Mozilla is a free software community founded in 1998 by members of Netscape. The Mozilla community uses, develops, publishes and supports Mozilla products, thereby promoting exclusively free software and open standards, with only minor exceptions. The community is supported institutionally by the non-profit Mozilla Foundation and its tax-paying subsidiary, the Mozilla Corporation.

<span class="mw-page-title-main">PDF.js</span> PDF viewer in JavaScript included in Mozilla Firefox

PDF.js is a JavaScript library that renders Portable Document Format (PDF) files using the web standards-compliant HTML5 Canvas. The project is led by the Mozilla Corporation after Andreas Gal launched it in 2011.

HTTP/3 is the third major version of the Hypertext Transfer Protocol used to exchange information on the World Wide Web, complementing the widely-deployed HTTP/1.1 and HTTP/2. Unlike previous versions which relied on the well-established TCP, HTTP/3 uses QUIC, a multiplexed transport protocol built on UDP. On 6 June 2022, IETF published HTTP/3 as a Proposed Standard in RFC 9114.

The project that became Firefox today began as an experimental branch of the Mozilla Suite called m/b. Firefox retains the cross-platform nature of the original Mozilla browser, using the XUL user interface markup language. The use of XUL makes it possible to extend the browser's capabilities through the use of extensions and themes. The development and installation processes of these add-ons raised security concerns, and with the release of Firefox 0.9, the Mozilla Foundation opened a Mozilla Update website containing "approved" themes and extensions. The use of XUL sets Firefox apart from other browsers, including other projects based on Mozilla's Gecko layout engine and most other browsers, which use interfaces native to their respective platforms. Many of these projects started before Firefox, and probably served as inspiration.

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