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Close on Escape Too Requires Restart

Updated version of David Winter's Close Tab on Escape, ported to be compatible with Thunderbird 68 and later.

Rated 5 out of 5 stars (15)
21 users

marked-lightning

Extension for Lightning: Allows the use of Markdown in Task descriptions and renders them as HTML in the TaskView.

Rated 5 out of 5 stars (3)
55 users

TaskDescriptions

Thank you to like this add-on up to now.
TaskDescriptions end in Thunderbird version 78s.

Now on, I start development of independent window entity programs.

August 01st 2021.

Sungho.

Not yet rated
8 users

Console messaging example

Console messaging example add-on

Not yet rated
3 users

Uzbek (uz) Language Pack

Uzbek (uz) Language Pack

Not yet rated
14,230 users

Header Tools Improved

Allows to modify headers and source of messages

Rated 5 out of 5 stars (37)
2,674 users

Open in browser

A context menu item to open the links associated with feed items in the default browser and then mark them as read.

Rated 5 out of 5 stars (1)
329 users

Scriptable Notifications

Allows you to define an external script (bash, batch, python, ...) which is called so you can manage mail notifications / alerts the way you want.

Snap/Flatpak versions of Thunderbird not supported.

Rated 5 out of 5 stars (2)
305 users

Filter Manager

Adds a Filters Button, opens Filter Manager

Rated 5 out of 5 stars (7)
2,135 users

DS-BCC

Data protection extension, to avoid data mishaps with circular mails:

1. warning for e-mail with multiple recipients not in BCC (exceptions possible)
2. warning for roundmails with a different recipient domain
3. warning if PGP key is present

Not yet rated
110 users

Addon Compatibility Check for TB 102/TB 115/TB 128

Checks all installed add-ons for compatibility with Thunderbird 128 (or TB 102/115) and displays status information on a button in the main toolbar. This button will open a detailed overview, including links to alternatives for abandoned add-ons.

Rated 4 out of 5 stars (10)
16,506 users

Tela Icons

Tela Icons for Thunderbird.

Mostly monochrome, with a few color touches.
Icons for Chat not provided
A few icons have been adapted.

Code from Phoenity theme is Mozilla Public Licence.
Images from Tela theme are GPLv3
xcf files included

Rated 5 out of 5 stars (2)
19 users

ReplyAsOriginalRecipientUp

When you reply to a mail sent to your personalized address (postfix/qmail/gmail extensions) such as john.doe+contactname@example.com, "From:" is replaced by your personalized address rather than your simple address.

Rated 5 out of 5 stars (10)
941 users

Attachment Saver

Saves all attachments from multiple selected emails as a single zip file.

It provides an extra option in your context menu when selecting emails.

Rated 4 out of 5 stars (9)
968 users

Aranese spell checker

Aranese (Occitan) spell checker - Diccionari ortogràfic d'Aranés

Not yet rated
13 users

Thunderkey

Lets you perform common email tasks using keyboard shortcuts.

Rated 5 out of 5 stars (2)
4 users

BCM Bengali (Bangladesh) Spellchecker

Spellchecker for Bengali (Bangladesh) following Bangla Academy and Prothom Alo standards: See https://banglatypefoundry.com/spellchecker/

Not yet rated
9 users

Export to ZIP

Export your mails and folders to a zip file!

Rated 3 out of 5 stars (12)
2,102 users

Custom sync interval for Lightning Calendar Requires Restart

Allows custom synchronization intervals for remote calendars imported by Lightning Calendar (no fiddling in about:config necessary)

Rated 5 out of 5 stars (1)
86 users

Search for

Context menu on message allowing quick filtering based on email/sender or domain

Rated 5 out of 5 stars (7)
1,446 users