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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)
660 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)
866 users

ThunderFWD

Encaminhe múltiplos e-mails de uma só vez.

Not yet rated
15 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)
5,605 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)
135 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)
7,623 users

Smileyfixer

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

Rated 5 out of 5 stars (4)
958 users

White Screen

Use white screen test to detect dead pixels, stuck pixels, and other display defects.

Not yet rated
12 users

Black Screen

Use black screen test to detect dead pixels, stuck pixels, and other display defects.

Not yet rated
27 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

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)
134 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)
693 users

EagleCloud Extension

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

Not yet rated
3 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)
348 users

EnhancedReplyHeaders

Customizable headers for Thunderbird

Rated 4 out of 5 stars (6)
206 users

Mark GMail Read

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

Rated 5 out of 5 stars (1)
119 users

WhatsApp - Thunderbird

Adds browser action icon to toolbar to open WhatsApp.

Rated 1 out of 5 stars (1)
216 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)
2,176 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 (47)
11,097 users

Typical Reply

Provides ability to send/receive typical replies in a team.Provides ability to send/receive typical replies in a team.

Rated 3 out of 5 stars (1)
787 users