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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)
35 users

Duck Email Converter

Convert your forwarding email and your DuckDuckGo Email Protection username to an email ready to be written to. Supports [at] and [dot] formats. The DuckDuckGo name, logos, trade dress, and other brand elements are trademarks of Duck Duck Go, Inc.

Not yet rated
9 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 (9)
1,222 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)
442 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)
134 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)
163 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)
327 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)
130 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)
5,424 users

Mark GMail Read

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

Rated 5 out of 5 stars (1)
113 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)
902 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)
10,847 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)
1,512 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)
690 users

Tomba : Email Finder

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

Not yet rated
24 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)
7,406 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)
58 users

Smileyfixer

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

Rated 5 out of 5 stars (4)
915 users

EnhancedReplyHeaders

Customizable headers for Thunderbird

Rated 4 out of 5 stars (6)
199 users