Appearance and Customization

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DevTools Button

Adds a DevTools Button, opens the Developer Toolbox

Not yet rated
144 users
Added Feb. 15, 2020

Toggle Message Pane

Adds a Preview Button, toggles the message preview

Rated 5 out of 5 stars (8)
492 users
Added Feb. 15, 2020

Config Button

Adds a Config Button, opens about:config in a dialog or a new tab.

Rated 5 out of 5 stars (3)
1,744 users
Added Feb. 15, 2020

Compact Headers

Limits displayed headers to 1 or 2 lines.

Rated 4 out of 5 stars (67)
11,264 users
Added Feb. 15, 2020

BrowseInTab

BrowseInTab lets you open and browse any link in a Thunderbird content tab. Links are followed within the tab and back/forward navigation is supported. Also with enhanced Zoom customization and a url bar.

Rated 4 out of 5 stars (13)
120 users
Added Feb. 10, 2020

Search Button

Toolbar button to invoke message search dialog window.

Rated 5 out of 5 stars (9)
2,726 users
Added Feb. 3, 2020

DeepDark for Thunderbird Requires Restart

Dark mode for Thunderbird UI

Rated 5 out of 5 stars (44)
124 users
Added Jan. 31, 2020

New QuoteColors Requires Restart

Updated QuoteColors for thunderbird v68x

Rated 3 out of 5 stars (7)
67 users
Added Jan. 20, 2020

TaskviewStyles

Change taskview styles.
Use justify button to read long sentences.
Executed well.

If coupling with TaskDescriptions, it is good enough!

To Hyun-geol who I like.

Not yet rated
15 users
Added Jan. 7, 2020

TaskDescriptions

Thank you to like this add-on up to now.
TaskDescriptions end in Thunderbird version 78s.

Now on, I start development of independent window entity programs.

August 01st 2021.

Sungho.

Not yet rated
12 users
Added Jan. 1, 2020

marked-lightning

Extension for Lightning: Allows the use of Markdown in Task descriptions and renders them as HTML in the TaskView.

Rated 5 out of 5 stars (3)
82 users
Added Jan. 1, 2020

Folder Colors Requires Restart

A fork of "Color Folders" (aka "Colored Folders") to support TB 68+. Applies custom colors to the folder tree in Thunderbird.

This add-on is superseded in TB78 by the built-in folder-color changer (in folder > Properties).

Rated 5 out of 5 stars (1)
58 users
Added Dec. 22, 2019

Close on Escape Too Requires Restart

Updated version of David Winter's Close Tab on Escape, ported to be compatible with Thunderbird 68 and later.

Rated 5 out of 5 stars (15)
21 users
Added Nov. 30, 2019

Monterail Full Dark 2 for TB>68

Monterail Full Dark, a Thunderbird theme inspired by the mockup of Monterail

Rated 4 out of 5 stars (30)
555 users
Added Nov. 18, 2019

Monterail Dark 2 for TB>68

Monterail Dark, a Thunderbird theme inspired by the mockup of Monterail

Rated 4 out of 5 stars (15)
233 users
Added Nov. 18, 2019

Just Restart/Quick Quit_TB115! Requires Restart

Restart TB with Ctrl+Shift+Z or File->Restart.
Quick Quit all TB windows by ctrl-click on main window X
Restart on alt+click main window X

Open error console, debugger, file picker for temporary addon install at TB start (options)

Rated 4 out of 5 stars (2)
17 users
Added Nov. 14, 2019

Minimize on Close

Causes Thunderbird's main window to minimize instead of closing. You can still close Thunderbird through the menu.

Rated 4 out of 5 stars (78)
39,395 users
Added Oct. 27, 2019

G Suite in tab

Now you can open G Suite App in Thunderbird tabs. (Calendar, Contacts, Keep, Task and Drive)

Rated 5 out of 5 stars (7)
1,598 users
Added Oct. 13, 2019

M-Hub Lite

Add Microsoft Office 365 Tabs to Thunderbird! Services supported by M-Hub Lite: Calendar, People, OneDrive, Word, Excel, PowerPoint, & Bing. Need business or enterprise support? Get M-Hub Pro: https://www.schiffner.com/software/m-hub-pro

Rated 3 out of 5 stars (5)
337 users
Added Oct. 3, 2019

changeQuote

It's an extension that changes the format of reply header.
You can choose between the standard Thunderbird reply header, a detailed reply header or a Customized reply header.
You can configure it in the Tools ->Add-on Preferences -> changeQuote.

Rated 4 out of 5 stars (21)
1,495 users
Added Sept. 4, 2019