Discord - Quick Access

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

Proton Mail - Quick Access

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

addy.io / AnonAddy for Thunderbird

Adds a button to the message composition window which updates recipient addresses to route the outbound message through addy.io or a self-hosted AnonAddy server, so your real, private email address isn't exposed to recipients.

Correcteur français en orthographe simplifiée

Ce correcteur simplifie l'orthographe selon les propositions de l'association Érofa :
- Suppression des consonnes doubles inutiles : "doner"
- Simplification des mots d'origine grecque ('ph' > 'f', 'th' > 't', etc.)
- 'x' finaux remplacés par 's'

ObsidianClipper

ObsidianClipper is a Thunderbird extension to clip emails to the Obsidian notetaking application. Save an email to Obsidian seamlessly with one click. Customize the format of new note titles and note layout.

j-lawyer.org-Thunderbird-Extension

Sendet E-Mails an einen j-lawyer.org Server

Note: This extension saves messages on a j-Lawyer.org server. Sensitive data may be transmitted. Depending on the type of connection, this data may also be unencrypted.

Trello - Quick Access

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

iCanban - Kanban with ICAL

ChatGPT Addon

Integrates ChatGPT with Thunderbird for quick and easy access to its conversational AI capabilities.

Redo Button

Adds a Redo button to Thunderbird compose toolbar

Undo Button

Adds an Undo button to Thunderbird compose toolbar

AutoReplace

This AddOn offers a function of autocorrection / auto text replacement. You can save a shortcut and a replacement and it will replaced automaticly if you type your new eMail text.

Account Check

Checks account settings against those listed in the Thunderbird autoconfig database and offers to fix settings that don't match. This is the same check performed when setting up an account.

PrettyBlockquote

The add-on ensures that the quoted text in your reply is clearly highlighted with a vertical blue line, even when viewed by recipients using different email clients like Gmail or macOS, by using inline CSS on the blockquote HTML tag.

Plastikthunder Crystal SVG Requires Restart

Plastik style from KDE with Crystal SVG icons for...

Tamizha Spellchecker Requires Restart

Tamil spell checker derived from the OpenOffice spell­­­­checker created by Tamizha Team

Uyghur Spelling Dictionary (ئۇيغۇرچە ئىملا لۇغەت)

Uyghurche Imla Lughet ئۇيغۇرچە ئىملا لۇغەت
Enables spell checking in any text field for Uyghur Arabic Alphabet.

Lopburi Flat Requires Restart

Lopburi Flat Theme: Thin, Light Flat. Minimalist look...

Humanity Requires Restart

A Humanity-Theme for linux-users. Works well with elementary or Humanity iconsets. Uses a lot of gtk-standard icons.

Dolnoserbski (dsb) rěcny pakśik

Lower Sorbian language pack for Thunderbird - Dolnoserbski rěcny pakśik za Thunderbird - Niedersorbisches/Wendisches Sprachpaket für Thunderbird