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DevTools Button

Adds a DevTools Button, opens the Developer Toolbox

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501 users

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Link in Tab

Link in Tab allows you to:
- Left click => open link in new tab
- Left double-click => open link in browser
- Middle click => open link in browser and close current tab

Rated 4 out of 5 stars (4)
570 users

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Toggle Address Box

Adds a Address Box button, toggles the Address Box in the Composer window

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70 users

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TabControl

Automatically close old tabs when opening new mails.

Rated 5 out of 5 stars (3)
238 users

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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)
50 users

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KeepRunning

Once you close Thunderbird you will no longer be able to see your new emails. This plugin keeps Thunderbird active in the background, meaning you can still receive your new emails after closing the app. Use this when the app is in the startup.

Rated 5 out of 5 stars (5)
1,516 users

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Addon-Info/Sync/Compatibility

* List addons: max version on ATN, version installed, compatibility with TB 91, description
* Show addon compatibility on addon button
* Print, copy to clipboard or email
* Indicate missing addons upon receiving the email from another TB ('sync')

Not yet rated
122 users

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Darko

Simple dark mode (theme) for your Thunderbird messages.

FastAddons.com/#darko

Rated 5 out of 5 stars (31)
4,364 users

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Mark All Read:WE

Mark all read (Web extension) - Adds a toolbar button to mark all unread messages in current folder as read.

*Note*
Version 2: Requires Thunderbird v128+
Version 1: Works best with Thunderbird v91+

Rated 3 out of 5 stars (19)
939 users

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Weatherlicious

A dynamic theme based on weather data from OpenWeatherMap.

Rated 4 out of 5 stars (8)
351 users

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Toggle HTML

Adds a Toggle HTML button

Rated 4 out of 5 stars (8)
976 users

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Topic Tree / Notebook in TB

* A place to keep notes and ideas
* Notes can be styled with images, tables, links, mindmaps etc.
* Full text search
* Copy and paste text/html
* Drag text/html into tree to create new note
* Backup
* Print notes
* Notes for emails: XNote++

Rated 3 out of 5 stars (5)
365 users

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Two Dynamic Birds

An extension of the "Two Little Birds" and "Dracula" themes that includes a toggle button to turn on dark mode.

The position of the light/dark toggle button can be customised to avoid it covering the cute birds!

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58 users

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Open Google Tabs

Open up Google Calendar, Notes, and Microsoft Outlook in a new tab.

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86 users

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ThunderSuite - Customize your Quick Access Sidebar

This extension allows user editing of the spaces sidebar.
Create custom spaces from the extension options, to turn the new toolbar introduced with Supernova into your personal quick access toolbox.

Rated 5 out of 5 stars (7)
271 users

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Thematic

Quickly switch between your themes or back to the default.

Rated 1 out of 5 stars (1)
486 users

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ThunderWebTabs

Opens Google Keep, Google Photos, Android Messages or any other website in Thunderbird's tab.

Users who encounter "Browser not supported errors" should try changing their User Agent. For more details, please visit the "Support site".

Rated 5 out of 5 stars (1)
257 users

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Change Link Appearance

Changes the appearance of links when displaying a message

Not yet rated
84 users

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Phoenity Icons

Phoenity icons for Thunderbird

Rated 5 out of 5 stars (68)
12,641 users

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userChromeJS

Load the contents of chrome/userChrome.js from the user's profile directory every time a window is opened. Also add a toolbar button which reloads userChrome.js in the current window.

Rated 5 out of 5 stars (8)
309 users

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