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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

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)
7,432 users

WhatsApp - Thunderbird

Adds browser action icon to toolbar to open WhatsApp.

Rated 1 out of 5 stars (1)
216 users

Smileyfixer

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

Rated 5 out of 5 stars (4)
930 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

Dysclusif

Simplifier la lecture de mails en supprimant l'écriture inclusive

Rated 5 out of 5 stars (1)
9 users

cb_thunderlink

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

Rated 5 out of 5 stars (7)
160 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

EagleCloud Extension

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

Not yet rated
3 users

AutoMover

An extension that auto-moves new emails in folders

Not yet rated
88 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)
830 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)
681 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
9 users

Email Address Extractor

Sender-Recipient Exporter is a Thunderbird add-on that extracts sender email addresses, sender domains, and recipient email addresses from messages in the currently selected mail folder. The data is exported as a CSV file for easy analysis.

Rated 4 out of 5 stars (1)
10 users

Huastec spell checker Requires Restart

This is a spell checker for Huastec (Tének) language. It is based on the Potosina variety.

Copyright: Jesus Carretero. University Carlos III of Madrid. Spain

Thanks to Kevin Scannell (SLU, USA)

Not yet rated
1 user

Komi (kpv) spellchecker dictionary

Komi (kpv) dictionary for spell-checking in Firefox and Thunderbird

Rated 3 out of 5 stars (2)
11 users

Udmurt spellchecker dictionary

Udmurt dictionary for spell-checking in Firefox and Thunderbird

Rated 5 out of 5 stars (1)
0 users

Chechen [Noxchi] Spell Checker

Chechen Republic [Noxchi] Spell Checker

Rated 4 out of 5 stars (1)
1 user

Interlingua - Spelling dictionary

Dictionario orthographic pro Interlingua.
Spelling dictionary for Interlingua.

Not yet rated
1 user