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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
127 users

QuickOWL

Quickly Open Web Links using custom context menu with selected text as input

QuickOWL saves one's time in copying text from email and pasting in browser page to do some action or searching.

Rated 5 out of 5 stars (1)
76 users

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)
1,555 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)
53 users

msofficewebapp

Adds browser action icon to toolbar to open MS Office Cloud. See https://thunderbird-essentials.thomas-bandl.de/wordpress/2020/10/04/microsoft-office-button/

Rated 5 out of 5 stars (1)
74 users

Emoji

It permits just with a single click to copy an emoji.
There is a search-box and the "Most used emojis" section (the first one).

If you want to send feedback or report bug, please go to https://github.com/Sav22999/emoji

Rated 5 out of 5 stars (12)
4,864 users

Notebird

Prendi appunti su tutte le email!

Rated 2 out of 5 stars (2)
136 users

TabControl

Automatically close old tabs when opening new mails.

Rated 5 out of 5 stars (3)
253 users

YouTube RSS feed redesign

Adds YouTube thumbnails to RSS feed entries

Rated 5 out of 5 stars (1)
63 users

Quick Spaces

Makes it possible to add custom addresses to the spaces toolbar

Rated 4 out of 5 stars (4)
43 users

Darko

Simple dark mode (theme) for your Thunderbird messages.

FastAddons.com/#darko

Rated 5 out of 5 stars (31)
4,080 users

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)
938 users

Weatherlicious

A dynamic theme based on weather data from OpenWeatherMap.

Rated 4 out of 5 stars (8)
360 users

Open Google Tabs

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

Not yet rated
90 users

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)
281 users

Topic Tree / Notebook and Wiki in TB

* 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
* Link notes
* Backup
* Print notes
* Notes for emails: XNote++

Rated 3 out of 5 stars (5)
365 users

Last selected message

The add-on remembers the last selected message in visited folders. After restarting Thunderbird, when we enter the previously visited folder, this message will be displayed, just like in Microsoft Outlook.

Rated 3 out of 5 stars (4)
139 users

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!

Not yet rated
112 users

Thematic

Quickly switch between your themes or back to the default.

Rated 1 out of 5 stars (1)
480 users

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)
265 users