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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)
682 users

Lojban spell check dictionary

Spell check dictionary for Lojban.

Not yet rated
2 users

Signature sync for Gmail

This extension allows you to automatically use your signature from Gmail accounts in Thunderbird. No longer need to maintain two separated signatures!

Rated 4 out of 5 stars (8)
1,208 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 (45)
10,693 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)
316 users

Night and Day Dynamic

A theme that switches between sun and moon based on time of day.

This is the canonical example dynamic theme published by Mozilla: https://github.com/mdn/webextensions-examples/tree/master/dynamic-theme

Rated 3 out of 5 stars (2)
939 users

URL Link

URL Link is a small Thunderbird extension that allows you to select a non-URL in a mail/news message or web-page, and open it in a browser window.

Rated 4 out of 5 stars (6)
2,108 users

Google Contact - raccourci

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

Not yet rated
172 users

Open Google Tasks

Adds an icon on the spaces toolbar to quickly open Google Tasks

Rated 4 out of 5 stars (3)
1,101 users

Open Google Messages

Adds an icon on the spaces toolbar to quickly open Google Messages

Rated 5 out of 5 stars (2)
221 users

Safelinks Cleanup

Cleans up Outlook’s “safelinks” tracking.

Minimal code to allow for easy auditing of the add-on. The only code is:
https://github.com/Cimbali/safelinks-cleanup/blob/main/src/background.js

Not yet rated
43 users

Dysclusif

Simplifier la lecture de mails en supprimant l'écriture inclusive

Rated 5 out of 5 stars (1)
9 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)
826 users

WhatsApp - Thunderbird

Adds browser action icon to toolbar to open WhatsApp.

Rated 1 out of 5 stars (1)
217 users

EagleCloud Extension

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

Not yet rated
3 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
82 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)
257 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
25 users

EnhancedReplyHeaders

Customizable headers for Thunderbird

Rated 4 out of 5 stars (6)
196 users