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Upper Sorbian spell checker

Uppersorbian dictionary for spellchecking in Mozilla products based on soblex version 2.10.22.

Not yet rated
4 users

TuLPe

Traffic light protocol extension for Thunderbird, messages are customizable in the option page.

Not yet rated
21 users

Dictionnaire occitan gascon

Corrector ortografic en occitan gascon entà Thunderbird.
Correcteur orthographique en occitan gascon pour Thunderbird.

Not yet rated
10 users

10ten Japanese Reader (Rikaichamp)

Look up Japanese words with the hover of a mouse.

After enabling the add-on from the toolbar (or press Alt+R) simply hover over Japanese text and a popup displays corresponding dictionary definitions.

Rated 5 out of 5 stars (4)
237 users

Dropbox Paper

How Does It Work?
Once you install the add-on, a new icon will appear in the Thunderbird toolbar. Simply click on the icon, and it will open the Dropbox Paper tab.

Will the Dropbox Paper Add-on Collect My Data?
Never.

Not yet rated
40 users

HTML Source Editor

Allows to edit the source of the currently composed message. A simple alternative to ThunderHTMLedit.

Rated 5 out of 5 stars (13)
5,123 users

Spellchecker Rumauntsch Puter

Spellchecker for Rumauntsch Puter

Not yet rated
3 users

Spellchecker Rumantsch Vallader

Spellchecker for Rumantsch Vallader

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5 users

Slack - Quick Access

Quick Access to Slack in a new tab with just one click on a simple, stylish icon button on your Spaces toolbar.

Rated 5 out of 5 stars (2)
233 users

Open Google Chat

Adds an icon on the spaces toolbar to quickly open Google Chat.

Not affiliated with Google.

Rated 5 out of 5 stars (1)
437 users

AWO Zipper 2

Dieses addon ist eine interne Entwicklung der AWO Bonn/Rhein-Sieg. Sie sollte nur auf betriebseigenen Geräten installiert werden.

Voraussetzungen: Es müssen 7-zip und die AWOZipperNativeComponent installiert sein!

Not yet rated
7 users

Thread in same folder

Runs after junk classification and filtering to make sure a newly-received message lands in the same folder as its parent in a thread.

Not yet rated
58 users

To must occur only once

This add-on changes all but the first "to" to "cc" if there are multiple "to" when replying to an email.

Rated 5 out of 5 stars (1)
26 users

Compose Responsive Images

When writing new emails, newly inserted images are made responsive by setting style="max-width:100%" and removing width/height attributes.

Rated 5 out of 5 stars (2)
209 users

Dino Game

Play the Dino game from Google Chrome and challenge friends to beat your score.

Rated 5 out of 5 stars (1)
15 users

Seams

Seams provides some integration with Patchwork, the patch tracking system. It makes the patch state visible directly from Thunderbird. It also displays useful links to a Patchwork instance or to mail archives, and commands to apply the patch locally.

Rated 5 out of 5 stars (2)
27 users

Arcus

Modern encryption in Thunderbird - powered by Rust, rage and WebAssembly

Rated 5 out of 5 stars (2)
17 users

Safe Links Cleaner

Clean up the display of links rewritten by Microsoft ATP Safe Links when reading and composing mail, so the original links can easily be viewed and copied, while retaining the rewritten addresses as the actual target of all links.

Rated 4 out of 5 stars (2)
126 users

CloneMessage

When composing an email, CloneMessage allows you to duplicate the current state of the email.

Rated 5 out of 5 stars (1)
167 users

Snakes by Bluemods

Classic Snakes game at your fingertips.

Snakes by Bluemods is a free-to-play single-player classics arcade game designed and developed by Justin Gates at Bluemods.com. The game allows the players to maneuver a snake made up of tiny squares.

Not yet rated
27 users