Search

Apply ROT13

Apply ROT13 to selected text in messages.

Select any text in the message body, right-click on the selection to open the context menu and select "Apply ROT13". Alternatively, you can use a configurable keyboard shortcut (Ctrl-Shift-D by default).

Rated 5 out of 5 stars (1)
29 users

Download Now

ReceivedHeaderInspector

ReceivedHeaderInspector vous aide à analyser les serveurs d'envoi et à vérifier les domaines pour prévenir l'usurpation d'identité dans vos e-mails, simplifiant l’identification des serveurs sans devoir parcourir le code source des messages.

Rated 5 out of 5 stars (2)
56 users

Download Now

Google Mail Tab

Button to open Google Mail, supports multiple accounts. Useful if you need to configure mail settings, filters or forwarding in Gmail.

Not yet rated
38 users

Download Now

Khmer Spellchecker

Khmer (km-KH) spellchecker by Tim Boeun.

Rated 5 out of 5 stars (2)
8 users

Download Now

Uzbek spell checker

This is a spell checker for Uzbek language in Latin script.

Not yet rated
1 user

Download Now

Dictionnaire orthographique kikongo

Correcteur orthographique en kituba de RDC, kikongo ya leta

Not yet rated
1 user

Download Now

New UNEC

New UNEC is a browser extension that transforms the UNEC student panel into a modern and user-friendly interface. It dynamically replaces the existing webpage’s HTML, CSS, and JS with an improved design, featuring automatic dark mode, language.

Not yet rated
0 users

Download Now

Haitian Creole spell checker

Korektè Òtograf Kreyòl (KÒK) se yon korektè òtograf otomatik gratis nan lang Kreyòl Ayisyen ki develope avèk èd LOGIPAM ak Kevin Scannell
Korektè Òtograf Kreyòl (KÒK) is a free Haitian Creole Spell Checker developed by LOGIPAM and Kevin Scannell

Rated 5 out of 5 stars (1)
15 users

Download Now

Simpler English Dictionary Requires Restart

A Simpler English Spellchecker.

Not yet rated
1 user

Download Now

FileLink Provider for Dropbox

Uploads your large attachments to your Dropbox instead of sending them by email. This uses Thunderbird's FileLink feature.

Rated 4 out of 5 stars (22)
51,117 users

Download Now

Azerbaijani Spellchecker

Azerbaijani SpellChecker for Mozilla Firefox. Developed with love by Mozilla Azerbaijan.

Not yet rated
1 user

Download Now

Provider for CalDAV & CardDAV

This extension is no longer needed. Thunderbird has native CalDAV and CardDAV support.

Rated 5 out of 5 stars (55)
23,207 users

Download Now

OpenFolder

This add-on makes it easy to open folders on a file server.

In order to use the add-on, you need to install two things: the add-on and the linked app.
You can download the linked app from the following website.

https://openfolder.net/

Rated 3 out of 5 stars (2)
155 users

Download Now

Mail Merge P

Mail Merge P (Mail Merge with Preview) is a Thunderbird add-on to send bulk emails based on data provided in a spreadsheet. It uses the nunjucks templating engine.

Rated 3 out of 5 stars (17)
2,124 users

Download Now

Toggle HTML

Adds a Toggle HTML button

Rated 4 out of 5 stars (8)
1,093 users

Download Now

Thematic

Quickly switch between your themes or back to the default.

Rated 3 out of 5 stars (2)
523 users

Download Now

PRATICHE MAIL

ARCHIVIA EMAILS ALLE PRATICHE

Not yet rated
52 users

Download Now

Darko

Simple dark mode (theme) for your Thunderbird messages.

FastAddons.com/#darko

Rated 5 out of 5 stars (34)
5,875 users

Download Now

GIMPS Opener

Open Great Internet Mersenne Prime Search (GIMPS) 2ᴾ-1 exponent numbers.

Rated 5 out of 5 stars (1)
5 users

Download Now

RepSel: Reply to all selected mails

Reply to all selected messages with a single button press. E.g., compose a reply to all emails in a folder or those matching a search. Req. permissions: menues to add UI, messageRead to get sender, compose to add recipients, storage for settings.

Rated 4 out of 5 stars (3)
114 users

Download Now