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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 (14)
131 users

Next Unread Group (Mark All Read)

Adds a Group button, marks current newsgroup or folder as read and moves to the next unread message

Rated 5 out of 5 stars (3)
136 users

Tomba : Email Finder

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

Not yet rated
27 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 (31)
7,409 users

Smileyfixer

Fixes smileys that show in emails created by Outlook as J.

Rated 5 out of 5 stars (4)
925 users

Add contact to CC by mentioning in body with @

Use @ to mention somebody on an email to link and add to the CC.

Rated 2 out of 5 stars (5)
317 users

BetterUnsubscribe

Adds a convenient button to the navigation bar, appearing whenever an unsubscribe option is detected in an email.

Rated 5 out of 5 stars (7)
961 users

Google Contact - raccourci

Ajoute une icône dans la barre d'espaces pour ouvrir rapidement Google Contact.

Not yet rated
176 users

Notion - Quick Access

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

Not yet rated
89 users

Outlook Calendar - Quick Access

This extension adds a simple button to your Spaces toolbar that opens in a new tab, providing you with one-click access to Outlook Calendar.

Rated 2 out of 5 stars (2)
274 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
10 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)
832 users

Dysclusif

Simplifier la lecture de mails en supprimant l'écriture inclusive

Rated 5 out of 5 stars (1)
8 users

Mark GMail Read

Automatically marks all messages in [Gmail] folder as read.

Rated 5 out of 5 stars (1)
119 users

Lojban spell check dictionary

Spell check dictionary for Lojban.

Not yet rated
2 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)
57 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 (6)
685 users

ThunderFWD

Encaminhe múltiplos e-mails de uma só vez.

Not yet rated
14 users

White Screen

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

Not yet rated
13 users

Black Screen

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

Not yet rated
27 users