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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 (48)
10,752 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)
682 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 (9)
1,203 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)
7,411 users

Smileyfixer

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

Rated 5 out of 5 stars (4)
907 users

Message Mover

This add-on lets you move messages from a specific folder (and sub-folders) to a new folder.

Rated 4 out of 5 stars (10)
437 users

ThunderFWD

Encaminhe múltiplos e-mails de uma só vez.

Not yet rated
14 users

✨ Awesome Emoji Picker ✨

Modern, nice emoji picker that you can use to find and select emojis. It will be copied to your clipboard or even directly inserted into the e-mail, when you click on it.

You will certainly like it.

Rated 5 out of 5 stars (10)
5,309 users

AutoMover

An extension that auto-moves new emails in folders

Not yet rated
87 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 (18)
834 users

Just Verify It

Just Verify It is a Thunderbird add-on that automates the scanning of email attachments with VirusTotal for malware. With over 50 antivirus engines, it provides reliable and quick results, ensuring the safety of your digital assets.

Rated 5 out of 5 stars (4)
631 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 (15)
130 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)
323 users

RainbowNote

Notes with rainbow colors.
7 notepads are utilized as several memos if needed.
Or, these 7 notepads are used by days of the week.

February 28th 2021.

Sungho Hwang.

I love God.

Rated 4 out of 5 stars (1)
161 users

FDK KIM Plugin

Dieses Plugin setzt automatisch die KIM-Header und den Betreff passend zu ihrem Anhang.

Anhängen werden analysiert und falls genau eine valide p7s Datei erkannt wird, werden die entsprechenden Daten automatisch gesetzt.

Not yet rated
57 users

Lojban spell check dictionary

Spell check dictionary for Lojban.

Not yet rated
2 users

Dysclusif

Simplifier la lecture de mails en supprimant l'écriture inclusive

Rated 5 out of 5 stars (1)
10 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

AI Email Assistant

Automatically generate email responses using AI through an external API integration. This add-on sends emails to an API and inserts the AI-generated response into your reply.

Rated 5 out of 5 stars (1)
1 user

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
111 users