# Id Name Users TB78 TB91 TB102 TB115 TB128 TB140 TB151 Activity Current Min (ATN) Max (XPI) Max (ATN) Notes
2 4631 Provider for Google Calendar 150874 78.0.2

 102.0.0

 115.3.0

 128.0.0

 128.5.11

 128.5.11

 128.5.11

 2026-03-02 128.5.11

 128.0 150.* 151.*
4 195275 Send Later 115390 8.9.8

 9.0.11

 10.6.1

 10.6.1

 10.7.8

 10.7.8

 10.7.8

 2025-11-07 10.7.8

 126.0 146.* 152.*
5 4654 Remove Duplicate Messages 94538 0.5.2.2

 0.5.4b5

 0.5.4b5

 0.5.4b5

 0.6.4

 0.6.6

 0.6.6

 2026-04-23 0.6.6

 140.0 150.* *
7 988138 Grammar and Spell Checker — LanguageTo 72168 8.11.2

 8.11.2

 8.11.2

 8.11.2

 8.11.2

 8.11.2

 8.11.2

 2024-07-31 8.11.2

 78.0 130.* 151.*
8 47144 Mail Merge 71813 7.4.0

 8.4.0

 9.6.1

 10.5.0

 11.5.0

 11.5.0

 11.5.0

 2026-03-31 11.5.0

 128.0a1 150.* 152.*
20 438634 DKIM Verifier 27448 4.1.1

 5.6.0

 5.6.0

 5.6.0

 6.2.1

 6.2.1

 6.2.1

 2026-04-07 6.2.1

 128.0 151.* *
23 2533 Addressbooks Synchronizer 23934 4.14

 4.14

 4.22

 4.22

 4.22

 4.22

 4.22

 2025-09-28 4.22

 102.0 145.* 151.*
25 54035 Thunderbird Conversations 23049 3.2.35

 4.0.26

 4.0.26

 4.1.7

 4.3.1

 4.3.9

 4.3.9

 2026-03-20 4.3.9

 140.0a1 150.0a1 152.0a1
32 10052 FiltaQuilla 17589 3.4

 3.7.2

 3.7.2

 4.3.1

 5.5.1

 6.1

 6.1

 2026-01-20 6.1

 140.0 149.* 151.*
34 217293 Signal Spam 14732 4.2.2

 4.2.2

 4.2.2

 4.2.9

 4.2.9

 4.2.9

 4.2.9

 2026-01-15 4.2.9

 115.0 148.* *
35 64758 XNote++ 14571 3.1.7

 3.5.16

 3.5.16

 4.7.7

 4.7.7

 4.7.7

 4.7.7

 2026-02-23 4.7.7

 115.0 148.* 151.*
40 90003 LocalFolders 12111 3.0.1

 4.0.0

 4.0.0

 4.1.0

 4.1.0

 4.2.5

 4.2.5

 2026-03-17 4.2.5

 140.0 150.* 152.*
41 986685 Phoenity Icons 11996 3.4

 3.7

 3.10


 3.14


 3.19


 3.19


 3.19


 2026-03-27 3.19


 128.0 151.* *
43 987783 Compact Headers 11834 2.23

 2.25

 3.5

 5.12

 5.12

 5.12

 5.12

 2026-03-27 5.12

 115.0 151.* *
45 4970 Tag Toolbar / Tag Popup 11479 2.1.5

 2.3.5

 2.4.1

 2.4.7

 2.4.7

 2025-03-23 2.4.7

 128.0 136.* 149.*
53 989207 Close to Tray (for Windows) 10198 1.6

 1.6

 1.6

 1.6

 1.6

 1.6

 1.6

 2026-01-31 1.6

 76.0 149.* *
55 1556 Allow HTML Temp 9554 6.3.8

 7.0.6

 8.1.5

 9.1.1

 10.1.1

 10.1.1

 10.1.1

 2025-09-25 10.1.1

 128.0 145.* 152.*
60 12018 Quick Folder Move 7773 1.9.0

 1.10.0

 1.10.0

 2.9.2

 3.3.0

 3.3.0

 3.3.0

 2025-06-21 3.3.0

 128.0 141.* 151.*
73 987906 Full Address Column 5445 1.0.4

 1.0.4

 1.0.4

 1.2.4

 1.2.4

 1.2.4

 1.2.4

 2025-05-16 1.2.4

 115.10.0 133.* *
74 987885 tbkeys-lite 5392 2.2.4

 2.2.4

 2.2.4

 2.3.0

 2.4.3

 2.4.3

 2.4.3

 2026-02-17 2.4.3

 128.0 149.* 151.*
82 987888 Message Header Toolbar Customize 4289 2.2.1

 2.2.2

 2.3.6

 2.4.3

 2.4.4

 2.4.4

 2025-03-23 2.4.4

 128.0 136.* 149.*
84 987775 Search Button 4114 2.3.2

 2.3.2

 2.3.2

 3.0.0

 3.1.0

 3.1.0

 4.0.0

 2025-06-29 4.0.0

 141.0 141.* 152.*
86 12802 Phoenity Buttons 4067 4.2

 4.3

 4.3

 5.1

 5.4

 5.4

 5.4

 2026-03-27 5.4

 128.0 151.* *
87 46207 mailmindr 4014 1.5.0

 1.5.0

 1.7.1
 1.7.1
 1.7.1
 1.7.1
 1.7.1
 2024-08-04 1.7.1
 102.0 129.* *
89 986682 Disable DragAndDrop (New) 3916 5.5.0

 5.5.0

 5.5.0

 5.5.0

 6.9.0

 6.9.0

 6.9.0

 2026-01-18 6.9.0

 128.0 149.* *
91 1898 FolderFlags 3788 1.6.0

 1.6.0

 1.6.0

 1.6.0

 1.7.2

 1.7.2

 1.7.2

 2025-08-18 1.7.2

 128.0 142.* 151.*
97 11646 No Message Pane Sort 3670 2.0.2

 2.0.2

 2.0.2

 3.0.2

 3.0.2

 3.0.2

 3.0.2

 2023-07-21 3.0.2

 115.0 116.* *
99 988001 Attachment Viewer: view in a tab, slid 3544 1.2.7

 2.3.3

 2.3.3

 2.9.2

 3.4.12

 3.4.12

 3.4.12

 2026-02-24 3.4.12

 128.0 148.* 151.*
100 987740 Nostalgy++/ Manage, search and archive 3504 3.4.2

 3.4.2

 3.6.18

 4.8.80

 5.0.3

 5.0.3

 5.0.3

 2026-01-12 5.0.3

 128.0 147.* 151.*
108 987764 Header Tools Improved 2952 3.7

 3.9

 3.9

 4.7

 4.12

 4.12

 4.12

 2025-09-27 4.12

 128.0 145.* *
110 331319 Folder Pane View Switcher 2881 4.0.2

 6.1

 6.1

 6.1

 6.1.3

 6.1.3

 6.1.3

 2026-02-08 6.1.3

 126.0 148.* 152.*
112 986692 Profile Switcher 2881 2.6

 2.6

 2.6

 3.3

 3.7

 3.7

 3.7

 2025-06-27 3.7

 128.0 141.* *
114 116388 Automatic Dictionary 2835 3.0.1

 3.0.1

 3.15.0

 3.15.0

 4.13.0

 4.13.0

 4.13.0

 2026-03-05 4.13.0

 128.0 148.0 151.*
116 988190 Old (classic) Icons 2726 1.0.4

 1.2.2

 1.5.2


 1.6


 1.7.1


 1.7.1


 1.7.1


 2025-03-09 1.7.1


 128.0 138.* *
121 988195 Filter Manager 2439 1.0

 1.1

 1.1

 1.3

 1.3

 1.3

 1.3

 2025-01-26 1.3

 115.0 136.* *
127 987911 Spam Scores 2156 1.3.1

 1.4.2

 1.4.2

 1.6.0

 1.6.0

 1.6.0

 1.6.0

 2025-11-11 1.6.0

 115.0 144.* *
129 988215 Startpoint Manager 2099 1.2.1

 2.5.2

 4.2.3

 6.1.3

 6.1.3

 7.0.0

 2026-03-24 7.0.0

 148.0a1 149.* 152.*
130 356507 Header Tools Lite
↳ Header Tools Improved		 2085 1.5.3

 1.5.5

 1.6.2

 2.0.2

 2.4.7

 2.4.7

 2.4.7

 2026-01-20 2.4.7

 128.0 148.* 151.*
136 987784 Config Button 2002 1.7

 1.8

 1.8

 2.2

 2.2

 2.2

 2.2

 2025-01-26 2.2

 115.0 136.* *
150 310 BiDi Mail UI 1677 0.13

 0.13

 0.13

 0.14.1

 0.16.2

 0.16.3

 0.16.3

 2025-10-26 0.16.3

 140.0 144.* *
151 987865 Previous Colors 1650 1.2

 1.2

 1.2

 1.2

 2.1

 2.1

 2.1

 2024-07-27 2.1

 128.0 128.* 152.*
157 988056 Get All Mail Button for TB78++ 1447 2.3.1

 2.3.1

 2.3.1

 3.1.1

 4.0.0

 4.0.0

 4.0.0

 2025-02-05 4.0.0

 126.0 136.* 152.*
161 988770 Auto Profile Picture 1413 2.5.0

 2.5.0

 2.5.0

 2.5.0

 2026-02-08 2.5.0

 112.0 149.* *
162 987787 Restart Button 1382 1.3

 1.6

 1.6

 1.6

 1.7

 1.7

 1.7

 2025-01-26 1.7

 128.0 136.* *
163 986632 SPAMBEE 1362 3.2.3

 3.2.3

 3.2.3

 3.3.8

 3.3.8

 3.3.8

 3.3.8

 2026-01-15 3.3.8

 115.0 148.* *
171 988289 keepassxc-mail 1219 1.10

 1.10

 1.10

 1.10

 1.16.20260226.0

 1.16.20260226.0

 1.16.20260226.0

 2026-02-26 1.16.20260226.0

 128.0 150.* 152.*
176 3492 Show InOut 1149 3.14

 3.14

 3.14

 4.6

 4.6

 4.6

 4.6

 2024-07-15 4.6

 115.10.0 130.* 151.*
179 2561 Copy Sent to Current 1122 3.27

 3.27

 3.39

 3.39

 3.39

 3.39

 2025-07-01 3.39

 102.3.0 141.* 148.*
182 360086 Toggle Headers 1108 3.0

 3.0

 3.0

 4.2

 4.2

 4.2

 4.2

 2025-04-07 4.2

 115.0 139.* *
183 1279 Xpunge 1106 2.1.1

 3.0.0

 3.0.0

 4.0.2

 5.0.2

 2024-11-13 5.0.2

 128.2.0 131.* 139.*
184 987987 Toggle HTML 1100 1.4

 1.7

 1.7

 1.9

 1.9

 1.9

 1.9

 2025-01-26 1.9

 115.0 136.* *
190 331666 QuickArchiver 1041 0.2.11

 0.2.11

 0.2.11

 2.2.0
 2.2.0
 2.2.0
 2.2.0
 2023-11-03 2.2.0
 115.0 115.* *
198 987914 Filter on Folder Button 944 1.2.0

 1.2.0

 1.5.0

 1.5.1

 1.6.2

 1.6.2

 2025-05-04 1.6.2

 128.0 140.0 145.*
205 676875 Rspamd-spamness 884 2.10.0

 2.10.0

 2.10.0

 2.10.0

 2.10.0

 2.10.0

 2.10.0

 2026-03-27 2.10.0

 78.0 150.* 152.*
211 987786 DevTools Button 846 1.3

 1.5

 1.5

 1.6

 1.6

 1.6

 1.6

 2025-01-26 1.6

 115.0 136.* *
213 988875 ThunderAI Sparks 841 1.2.4

 2.0.0

 2.0.0

 2026-02-24 2.0.0

 140.0 148.* 153.*
222 407832 Filter Button 775 2.0.3

 2.0.5

 2.0.5

 2.0.5

 2.0.6

 2026-04-28 2.0.6

 150.0 152.0 *
225 989342 NC Connector for Thunderbird 740 3.1.0

 3.1.0

 2026-05-05 3.1.0

 140.0 140.* 153.*
246 161710 More Snooze 667 3.3.3

 3.3.3

 3.3.3

 3.3.3

 4.0.0

 4.0.0

 4.0.0

 2025-04-09 4.0.0

 128.0 137.* *
261 508826 EDS Calendar Integration 595 0.9.3

 0.9.3

 1.0.2

 1.1.0

 1.2.0

 1.3.0

 1.3.0

 2025-05-07 1.3.0

 136.0 138.* 152.*
272 988724 CalendarSearchExport 574 1.6

 1.9

 1.9

 1.9

 2025-12-06 1.9

 128.0 147.* 151.*
275 161820 AlertSwitch 545 0.9.14

 0.9.14

 0.9.14

 1.0

 1.0

 1.0

 1.0

 2024-08-23 1.0

 115.0 130.* *
279 988806 Allday Tasks 541 0.7

 0.7

 0.7

 0.7

 0.7

 0.7

 2026-03-15 0.7

 91.0 150.* 151.*
306 988561 Freecosys - Провайдер FileLink 397 1.1
 1.1
 1.1
 1.1
 1.1
 1.1
 2023-09-21 1.1
 91.0 115.* *
311 988567 Send Unsent Mail Button 388 1.4.0

 3.0.0

 3.0.0

 3.0.0

 2025-02-06 3.0.0

 126.0 136.* 152.*
316 690062 Sender Frequency 377 2.0.5

 2.0.5

 2.0.5

 3.0.1

 3.1.2

 3.1.2

 2025-10-18 3.1.2

 128.0 145.* 149.*
325 49594 SubSwitch 335 0.9.56

 0.9.56

 0.9.56

 1.0.8

 1.0.8

 1.0.8

 1.0.8

 2025-06-20 1.0.8

 115.0 141.* *
337 988772 All Events 317 1.2

 1.2

 1.2

 2024-09-05 1.2

 128.0 132.* 151.*
340 844927 ToggleReplied 313 2.0.1

 2.0.1

 2.0.2

 2.0.2

 2.0.2

 2025-02-02 2.0.2

 126.0 135.* 152.*
342 986610 userChromeJS 308 1.0

 1.2

 1.2

 1.2

 1.2.2

 1.2.2

 1.2.2

 2025-06-30 1.2.2

 126.0 141.* 152.*
374 559954 Tidybird 246 3.2.1

 4.3.0

 4.6

 4.6

 4.7.2

 5.6

 5.6

 2026-04-06 5.6

 137.0 150.* 151.*
375 988837 Calendar/Project Tools: Gantt-/Year V 245 2.6.10

 2.6.10

 2.6.10

 2.6.10

 2.6.10

 2.6.10

 2.6.10

 2026-04-17 2.6.10

 60.0 150.* 151.*
378 988849 Calendar event from email with date de 243 0.19

 0.19

 0.19

 2026-04-26 0.19

 128.0 147.* *
394 745576 Logout 212 2.5

 2.7

 2.7

 2.8

 3.2

 3.2

 3.2

 2025-07-03 3.2

 128.0 140.* 152.*
399 988427 EnhancedReplyHeaders 205 1.0
 1.0
 1.0
 1.0
 1.0
 2023-01-06 1.0
 102.0 102.* *
405 988543 selectAll Button 198 1.1
 1.1
 1.1
 2.2.4

 2.2.4

 2.2.4

 2026-01-14 2.2.4

 128.0 149.* 153.*
451 534258 Received 147 2.6.2

 2.6.2

 2.6.2

 2.6.2

 2.6.2

 2.6.2

 2.6.2

 2025-12-04 2.6.2

 78.0 146.* 152.*
475 986230 Mailing list filter 126 3.0.1

 4.0.0

 4.0.0

 5.1.0

 5.1.0

 5.1.0

 2025-04-09 5.1.0

 128.0 137.* *
481 988960 Mass Emailer 122 1.18

 2.3.3

 2.3.3

 2.3.3

 2026-03-16 2.3.3

 128.0 148.* *
484 987868 Next Unread Group (Mark All Read) 121 1.1

 1.3

 1.3

 1.4

 1.4

 1.4

 1.4

 2025-01-26 1.4

 115.0 136.* *
485 988128 Select Inbox on Startup 118 3.4
 3.4
 2025-09-04 3.4
 140.0 141.* *
488 987869 Next Unread Thread (Mark All Read) 116 1.1

 1.3

 1.3

 1.4

 1.4

 1.4

 1.4

 2025-01-26 1.4

 115.0 136.* *
491 987988 Toggle Inline 113 1.2

 1.3

 1.4

 1.5

 1.5

 1.5

 1.5

 2025-01-26 1.5

 115.0 136.* *
498 988389 Thunderbird OpenProject 110 0.5
 0.5
 0.5
 0.5
 0.5
 0.5
 0.5
 2022-10-28 0.5
 68.0 102.* *
513 988816 Message Links 4 events 104 0.3

 0.3

 0.3

 0.3

 2024-10-09 0.3

 115.0 133.* 151.*
514 988842 Toggle Dark Reader 104 1.2

 1.2

 2024-11-14 1.2

 133.0 134.* *
537 852623 Remote Content By Folder 88 2.0.1

 2.0.1

 3.1.5

 3.1.5

 3.1.6

 3.1.6

 3.1.6

 2025-02-02 3.1.6

 126.0 135.* 152.*
555 988167 todowebapp 79 1.2
 1.2
 1.3
 1.3
 1.3
 1.3
 1.3
 2023-06-18 1.3
 102.0 102.* *
571 987989 Toggle Summary 74 1.3

 1.4

 1.5

 1.6

 1.6

 1.6

 1.6

 2025-01-26 1.6

 115.0 136.* *
584 988100 Folders for search, onDisk Status- Glo 72 1.3

 1.5.2

 1.8.3

 1.8.3

 2025-04-09 1.8.3

 128.0 137.* 146.*
588 988168 onedrivewebapp 70 1.2
 1.2
 1.3
 1.3
 1.3
 1.3
 1.3
 2023-06-19 1.3
 102.0 102.* *
590 988166 googlesearchwebapp 69 1.2
 1.2
 1.2
 1.2
 1.2
 1.2
 1.2
 2021-09-06 1.2
 78.0 91.* *
593 989352 Calendar Annual View 69 2026-02-15 1.0.2

 147.0 148.0 150.*
611 987916 telegramwebapp 60 1.2
 1.2
 1.31
 1.31
 1.31
 1.31
 1.31
 2023-06-18 1.31
 102.0 102.* *
617 988106 Toggle Address Box 58 1.0

 1.0

 1.2

 1.3

 1.3

 1.3

 1.3

 2025-01-26 1.3

 115.0 136.* *
620 988126 ResizeTbWidth 57 20.1
 20.1
 20.1
 20.1
 20.1
 20.1
 20.1
 2023-01-15 20.1
 78.0 102.* *
631 989211 X-Header-To-Column 54 1.2.1

 1.2.1

 1.2.1

 2026-03-11 1.2.1

 128.0 150.* 151.*
642 988171 msofficewebapp 50 1.2
 1.2
 1.3
 1.3
 1.3
 1.3
 1.3
 2023-06-18 1.3
 102.0 102.* *
643 988258 Recently 50 0.0.6
 0.0.6
 0.0.6
 0.0.6
 0.0.6
 0.0.6
 2022-06-28 0.0.6
 78.0 103.0 142.*
652 988451 PowerFolder 49 16.6.100
 16.6.100
 16.6.100
 16.6.100
 16.6.100
 16.6.100
 16.6.100
 2023-02-22 16.6.100
 78.0 102.* *
659 988428 TileNote 47 1.6
 1.6
 1.6
 1.6
 1.6
 1.6
 1.6
 2023-01-10 1.6
 78.0 102.* *
665 989275 ShowThread 46 1.5

 1.5

 1.5

 2025-12-06 1.5

 128.0 147.* 151.*
774 988170 skypewebapp 27 1.2
 1.2
 1.3
 1.3
 1.3
 1.3
 1.3
 2023-06-19 1.3
 102.0 102.* *
775 988431 RainbowMemo 27 2.3
 2.3
 2.3
 2.3
 2.3
 2.3
 2.3
 2023-01-17 2.3
 78.0 102.* *
797 988790 Birdbox 23 1.4.0

 1.4.0

 2.1.0

 2025-05-30 2.1.0

 136.0 140.* 145.*
907 989021 OpenDetachedAttachments 14 3.0

 3.0

 3.0

 2025-07-03 3.0

 128.0 142.* 151.*
971 988169 wikipediasearchwebapp 10 1.2
 1.2
 1.3
 1.3
 1.3
 1.3
 1.3
 2023-06-19 1.3
 102.0 102.* *
1050 987922 Date detection 6 0.0.7

 0.0.7

 0.0.7

 0.0.7

 0.0.7

 2023-07-12 0.0.7

 68.0 117.* 128.*
1089 989042 Retrieve Remote Avatar 5 1.3

 2025-07-15 1.3

 139.0 142.* 145.*
1094 989456 Per Folder Preferences 5 0.1

 0.1

 2026-03-01 0.1

 140.0 150.* 152.*
1184 988173 Thunderkey 3 1.0.1

 1.0.1

 1.0.1

 2021-09-06 1.0.1

 78.0 91.* 102.0

Statistics

93
1

The report is based on work by Christopher Leidigh, extended by John Bieling.