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Quick Filter By

A simple extension that sets the Quick Filter based on the selected message fields. You can filter by either selecting "Quick Filter By" in the message list context menu or simply by alt-clicking on the message's sender, recipient or subject text.

Rated 5 out of 5 stars (6)
444 users

Grammar and Spell Checker — LanguageTool

Check your emails for spelling and grammar issues

Rated 4 out of 5 stars (34)
65,644 users

DMS HEADERS EXTRACTOR

An extension that help you to extract any header parameter of emails that exist in any selected folder or account or just all the accounts on your thunderbird by only precising it in the popup input

Rated 5 out of 5 stars (1)
34 users

Tag Sync for TB

Syncronise/transfer tags, to other TB installations.

POP and some IMAP servers don't store tags (keywords).
This addon helps to have the same emails tagged on all TB installations.
Uses a central database, can be installed on your PC or server.

Rated 5 out of 5 stars (2)
196 users

Outlook/Teams Appointments

Get the hidden appointment from an email from outlook/teams as a .ics-file - Icon: https://fontawesome.com/

Rated 4 out of 5 stars (13)
5,435 users

wikipediasearchwebapp

Adds browser action icon to toolbar to open Wikipedia-Search. See http://thunderbird-essentials.thomas-bandl.de/wordpress/2020/10/05/wikipedia-suche-button/

Not yet rated
11 users

QNote

Add sticky notes to your emails with this feature-rich, drop-in replacement for the XNote++ extension.

Rated 5 out of 5 stars (64)
5,771 users

TaskviewGridLayout

TaksviewGridLayout works in Thunderbird version 78.0~102.*.
If clicking any task after (re)starting Thunderbird, it PERSISTs.

REQUIREMENTS:
1. 1920 x 1080 RESOLUTION
2. 100% MAGNIFICATION

Praise Stephen Kim Sou-hwan.

April 2nd 2023.

Rated 1 out of 5 stars (1)
5 users

CT Cornish Spell-Checker - SWF

This is a spell-checker for the Cornish language in the Standard Written Form.

Not yet rated
3 users

Close Search Tabs

Add a button to close all search results tabs in Thunderbird

Rated 1 out of 5 stars (1)
49 users

FindNow

Allows exporting messages and folders for FindNow

Rated 5 out of 5 stars (1)
35 users

update-test

DO NOT install, this is for testing the update mechanism.

If you are interested in the functionality, use quicker quicksearch instead

Rated 3 out of 5 stars (1)
6 users

Skiff Mail - Quick Access

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

Not yet rated
8 users

Whatsapp - Quick Access

Quick Access to Whatsapp Web 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)
559 users

RT Archive Emails to Sugar & SuiteCRM

Archive Emails from Thunderbird to a Sugar or SuiteCRM record of your choice with RT Archive Email.
You can archive one or more emails, along with their attachments, to a Contact, Lead, Account, Opportunity, or Project.

Rated 4 out of 5 stars (5)
81 users

Start with Inbox

Selects the latest message in the Inbox after start of Thunderbird.

Rated 4 out of 5 stars (19)
1,242 users

DeepL-Write for selected text

Unofficial DeepL Write extension for Thunderbird.

Not yet rated
9 users

English (en-CA) Language Pack

English (en-CA) Language Pack

Rated 3 out of 5 stars (2)
51,093 users

Tuta Mail - Quick Access

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

Not yet rated
159 users

Mark Button

Toolbar button to mark a message as read or unread with 1 click.

Rated 5 out of 5 stars (4)
171 users