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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)
457 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)
167 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)
942 users

Malay (ms) Language Pack

Malay (ms) Language Pack

Not yet rated
14,279 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 (46)
10,978 users

Markdown Here Revival

A revival of the popular Markdown-Here addon for Thunderbird.

Markdown Here Revival is a Thunderbird extension that lets you write emails in Markdown and render them as HTML before sending.

Rated 4 out of 5 stars (18)
1,537 users

Tomba : Email Finder

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

Not yet rated
26 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)
138 users

Lojban spell check dictionary

Spell check dictionary for Lojban.

Not yet rated
2 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 (9)
5,574 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)
7,493 users

Smileyfixer

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

Rated 5 out of 5 stars (4)
957 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 (14)
136 users

EagleCloud Extension

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

Not yet rated
3 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)
638 users

ThunderFWD

Encaminhe múltiplos e-mails de uma só vez.

Not yet rated
16 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)
697 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

WhatsApp - Thunderbird

Adds browser action icon to toolbar to open WhatsApp.

Rated 1 out of 5 stars (1)
214 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)
336 users