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Remove Duplicates

Removes duplicate messages

Rated 4 out of 5 stars (17)
141 users

AutoBucket

This is an extension function that classifies emails into multiple buckets using AI(the Bayesian filter) and tags them.

Rated 3 out of 5 stars (11)
139 users

AutoMover

An extension that auto-moves new emails in folders

Not yet rated
84 users

GMail Labels

Shows GMail labels in each message's headers panel. When using Thunderbird with a Gmail account, it is not possible to guess which Gmail labels a message was applied (and in which folders it can be found). This extension provides this information

Rated 4 out of 5 stars (17)
610 users

Simple Startup Minimizer

This extension will minimize Thunderbird on startup, it is very simple and I didn't put much work into it but it should work on all platforms. Please let me know if you want more features added into it.

Rated 4 out of 5 stars (30)
6,615 users

White Screen

Use white screen test to detect dead pixels, stuck pixels, and other display defects.

Not yet rated
17 users

Black Screen

Use black screen test to detect dead pixels, stuck pixels, and other display defects.

Not yet rated
30 users

ProtonMail Encryption Status

When using ProtonMail Bridge to integrate Mozilla Thunderbird withProtonMail, it's not easy to tell which emails were end-to-end (E2E) encrypted. This add-on puts an icon in the toolbar above every message to show you its encryption status.

Rated 5 out of 5 stars (5)
654 users

WhatsApp - Thunderbird

Adds browser action icon to toolbar to open WhatsApp.

Rated 1 out of 5 stars (1)
218 users

Zivver for Thunderbird

This extension automatically detects Zivver messages and decrypts them on-the-fly using the Zivver API. Messages are decrypted only when actively displayed by the user and are never stored locally.

Not yet rated
8 users

EagleCloud Extension

Works along with EagleCloud Information Security product to secure sensitive information based on company policy.

Not yet rated
3 users

Dark Reader

Dark mode for every email. Take care of your eyes, use dark theme for night and daily messaging.

Rated 4 out of 5 stars (38)
9,421 users

TaskviewStyles

Change taskview styles.
Use justify button to read long sentences.
Executed well.

If coupling with TaskDescriptions, it is good enough!

To Hyun-geol who I like.

Not yet rated
10 users

Dysclusif

Simplifier la lecture de mails en supprimant l'écriture inclusive

Rated 5 out of 5 stars (1)
12 users

Tomba : Email Finder

Data to power your entire business, with just one click.

Not yet rated
25 users

cb_thunderlink

cb_thunderlink is a thunderlink replacement.
Clickable, durable links to specific messages inside Thunderbird.

Rated 5 out of 5 stars (6)
359 users

Conscious ClickUp Save

Conscious ClickUp Thunderbird add-on is a extension that gives support to send/archive mails from Thunderbird to ClickUp project management platform (https://clickup.com/)
For more info: https://github.com/Ruvin/Conscious-ClickUp-Thunderbird-Plugin

Rated 4 out of 5 stars (3)
62 users

Changelogger

Gets changelogs for updated addons

Not yet rated
32 users

PasteMarkdown&XHTMLForm

Thank you to like this add-on up to now.
PasteMarkdown&XHTMLForm ends in Thunderbird version 78s.

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

August 01st 2021.

Sungho.

Rated 1 out of 5 stars (2)
5 users

Clacks Overhead

In tribute to the late Sir Terry Pratchett, many users are adding the message "GNU Terry Pratchett" into the email header "X-Clacks-Overhead". Clacks Overhead shows users when this appears in their emails and displays the message included.

Rated 5 out of 5 stars (1)
33 users