Appearance and Customization

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Show All Body Parts Requires Restart

Enable the View | Message Body As | All Body Parts message display mode.

Rated 4 out of 5 stars (22)
169 users

Show Calendar Week Requires Restart

Shows the calendar week Thunderbird/Lightning calendar's moth and multi-week view.

Rated 5 out of 5 stars (6)
1 user

Keep in Taskbar Requires Restart

A simple plugin that makes the Close button behave exactly like the Minimize one.

Rated 4 out of 5 stars (33)
878 users

Column Reader

Web reader for wide screens and long documents. Read with pleasure in attractive layouts.

Rated 5 out of 5 stars (14)
7 users

Monterail Dark 2 for TB>68

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

Rated 4 out of 5 stars (15)
195 users

tbkeys-lite

Custom Thunderbird keybindings

This add-on is a follow on to Keyconfig which is no longer supported.

It is aimed at power users. Please look at the GitHub site before leaving a one star review about documentation or usability.

Rated 5 out of 5 stars (61)
4,417 users

Before Tabs Toolbar Requires Restart

Adds a toolbar before the tabs.

Rated 5 out of 5 stars (10)
62 users

Show InOut

Adds some columns to the tableview. One shows an indicator wether a mail is incoming or outgoing, other shows the sender, the recipient(s) or the correspondent(s). Columns can be shown as name only, address only or both.

Rated 5 out of 5 stars (41)
902 users

QuickMultiselect Requires Restart

Adds a column with checkboxes so that you can select multiple messages with only a mouse click.

Rated 5 out of 5 stars (2)
0 users

Seturgent Requires Restart

Sets the urgent flag (X11) of the Thunderbird window under Linux in case of new messages. Does ignore special folders like Drafts, Junk and such.

Rated 5 out of 5 stars (2)
2 users

Flat Folder Tree Reborn Requires Restart

Flat Folder Tree Reborn is an update of the Flat Folder Tree add-on, which allows you to selectively promote or breakout sub-folders in the folder tree. Use with IMAP servers where some folders remain collapsed under a special namespace like [Gmail].

Rated 5 out of 5 stars (2)
2 users

TabsInStatusbar&IconsInMenubar

Move tabs in status bar and iconify menu bar.

This add-on researches new tabs' position and menubar iconification.
This add-on is as role as if task bar of Windows.

To Hyun-geol who I like.

Life in Holy Spirit.

Rated 5 out of 5 stars (2)
4 users

Darko

Simple dark mode (theme) for your Thunderbird messages.

FastAddons.com/#darko

Rated 5 out of 5 stars (33)
5,908 users

Monterail Darkness Extended

Monterail Dark, a Thunderbird theme inspired by the mockup of Monterail extended to Calendar, Tasks and Composer. Some more tweaks to normalize heights of the tabs and other options.

Rated 5 out of 5 stars (5)
72 users

Tela Icons

Tela Icons for Thunderbird.

Mostly monochrome, with a few color touches.
Icons for Chat not provided
A few icons have been adapted.

Code from Phoenity theme is Mozilla Public Licence.
Images from Tela theme are GPLv3
xcf files included

Rated 5 out of 5 stars (2)
16 users

Send Unsent Mail Button

Toolbar button to send unsent messages.

Rated 5 out of 5 stars (2)
293 users

quickfilter-kbd

A simple Thunderbird extension that adds keyboard shortcuts to quick-filter messages with the same sender, subject, or recipient as a selected message.

Rated 5 out of 5 stars (2)
65 users

Gantt View Requires Restart

Gantt Chart view for Sunbird/Lightning

Rated 4 out of 5 stars (36)
58 users

Colored Folders Requires Restart

Add colors to your folders in Thunderbird!
Must-have for better organisation + intuitive and speedy workfow...

This is project "Color Folders" (originally by Fisheater), corrected, resurrected, restaurated, extended and republished.

Rated 4 out of 5 stars (151)
3,501 users

MinimizeToTray Reanimated Requires Restart

MinimizeToTray Reanimated is an application mainly dedicated to Thunderbird to allow its minimization in the systray in one click. It is the update of MinimizeToTray Revived, which is not maintained anymore since the recent versions of Thunderbird.

Rated 4 out of 5 stars (140)
744 users