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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)
318 users

Norsk nynorsk (nn-NO) Language Pack

Norsk nynorsk (nn-NO) Language Pack

Not yet rated
14,221 users

Punjabi (pa-IN) Language Pack

Punjabi (pa-IN) Language Pack

Not yet rated
11,798 users

Mailing list filter

Mail filter search term using mailing lists (and not whole addressbooks).

Rated 5 out of 5 stars (1)
135 users

Search Button

Toolbar button to invoke message search dialog window.

Rated 5 out of 5 stars (10)
3,421 users

Limit non-BCC recipients

Check that number of non-BCC recipients does not exceed a parameter.

Rated 5 out of 5 stars (10)
782 users

Expression (Power) Message/Calendar Search - NG

* Mail / calendar search
* Fuzzy search: Bucher also finds Bücher
* Visual search query builder
* Search window as a tab
* New search and filter criteria: reply-to, bcc, to-only, filename, xnote, date range, time, etc
* to A but not to B + more

Rated 4 out of 5 stars (49)
2,570 users

Spellchecker Rumantsch Grischun

Spellchecker Rumantsch Grischun

Not yet rated
2 users

Folders for search, onDisk Status- Glodaquilla-NG:

Global Search/Indexing Enhancements/ On Disk Status for IMAP
Permits selective enabling and disabling of search indexing on folders or accounts - with inheritence. Extra columns can show whether a mail is stored on disk and its indexing status.

Not yet rated
34 users

Ungender

Eine Thunderbird-Erweiterung, welches Binnen-Is und Ähnliches von Webseiten entfernt. Es basiert auf der bekannten Firefox Erweiterung Binnen-I be gone.

Rated 4 out of 5 stars (5)
226 users

reply-all-auto-cc

When reply to all is used, move original To: recipients to Cc:
Also forces "Cc:" to be displayed on all new messages.

GitHub Repo: https://github.com/cyb3rmonk/reply-all-auto-cc

Rated 5 out of 5 stars (4)
779 users

Read Aloud: A Text to Speech Voice Reader

Read aloud the selected email messages using text to speech (TTS). Read Aloud is intended for users who prefer to listen to content instead of reading, and those with dyslexia or other learning disabilities.

Rated 4 out of 5 stars (5)
872 users

Sardu (ditzionàriu CROS)

Pachete de su curretore ortogràficu sardu basadu a subra de su progetu CROS. Custu cumplementu permitit de integrare su curretore ortogràficu sardu CROS in su cliente de posta eletrònica Mozilla Thunderbird.

Not yet rated
12 users

Dolnoserbski pšawopisny słownik

Lower Sorbian spellchecking dictionary by the Sorbian Institute.

Not yet rated
7 users

Move Mail Shortcuts

Allows assigning keyboard shortcuts for moving mails to folders and jumping to the folders.

Rated 4 out of 5 stars (12)
569 users

Grammar, Proofreading & Spell Checker

Check the grammar and spelling directly inside Thunderbird using Wordeep technology

Rated 4 out of 5 stars (4)
687 users

X-Original-To Column

This addon adds a new column called X-Original-To in the message list which shows the original recipient address of the message (the contents of the X-Original-To header). This can be useful for systems with catch-all email addresses.

Rated 5 out of 5 stars (2)
50 users

Simple Mail Redirection

Allows you to resend (also known as redirect) email messages.
Uses 'cardbook' if installed

Bases on the add-on 'Mail Redirect' by Onno Ekker and Pawel Krzesniak

Please see the support page on how to use and why it sometimes does not work!

Rated 5 out of 5 stars (38)
9,122 users

Jitsi Meet event generator

Event and link generator for Jitsi Meet service.

Rated 4 out of 5 stars (6)
332 users

CustomCSS

Allow the user to configure custom CSS that will be added to messages when edited
(new, reply and forward). The custom CSS will be added to a newly created <style>
element in the email's head.

Rated 5 out of 5 stars (4)
205 users