Up & Coming Extensions

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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 (7)
1,630 users

Hide Local Folders for TB78++

Removes the 'Local Folders' entry from the folder pane.
(The folder itself will stay existent.)
(Based on the original work of Alex Cabal.)

Rated 5 out of 5 stars (8)
1,043 users

Textmarker

Highlights selected text when composing emails. Default colour is yellow - other colours are available via Options.
(Works only during writing an e-mail, i.e. only in the compose window.)

Rated 5 out of 5 stars (15)
2,857 users

Web Translate

The best Translator for Thunderbird 78!
Available also for Firefox!

Supported translators:
Google Translate
Microsoft Translator
DeepL
Yandex
Яндекс Переводчик
Google 翻译
百度翻译

Rated 5 out of 5 stars (11)
9,556 users

tbkeys-lite

Custom Thunderbird keybindings

Rated 5 out of 5 stars (19)
1,103 users

DeepL Selected Text

Unofficial DeepL translate extension for Thunderbird.

Rated 4 out of 5 stars (4)
1,475 users

BiDi Mail UI

Direction control and BiDi-related charset misdetection correction

Rated 4 out of 5 stars (36)
2,456 users

Birthday Calendar

Adds calendars containing the birthdays from your address books.

Rated 5 out of 5 stars (13)
1,715 users

FileLink for Plik

Upload large attachments to Plik and send the link by email

Rated 5 out of 5 stars (1)
1,222 users

Signal Spam

Add simple functions to report spams or phishing to Signal Spam by one click.
The add-on will also alert you if you open a fraudulent e-mail (phishing).

Rated 3 out of 5 stars (138)
12,436 users

ThirdStats

Beautifully visualized statistics for your Thunderbird Email Accounts

Rated 5 out of 5 stars (9)
1,477 users

Simple Mail Redirection

Allows you to resend (also known as redirect) email messages.
Uses 'cardbook' if installed

Bases on the add-on 'Mail Redirect' by Onno Ekker and Pawel Krzesniak

Please see the help page on how to use and why it sometimes does not work!

Rated 5 out of 5 stars (12)
4,106 users

Dictionary for recipient

Sets the spell check dictionary based on the first recipient

Not yet rated
3,220 users

PrintingTools NG

Message & Address Printing Tools (NextGen)

New 78 Update! 68/78 Compatible

Rated 5 out of 5 stars (18)
4,142 users

Full Address Column

Adds a full sender and recipient e-mail column to message list panel.

Rated 4 out of 5 stars (18)
2,230 users

MyPhoneExplorer

This Addon is needed to sync your Android based smartphone with Thunderbird with the Software "MyPhoneExplorer"

Rated 5 out of 5 stars (9)
8,721 users

*cloud - FileLink for Nextcloud and ownCloud Featured

Upload large attachments to your Cloud and send the link by email

Rated 5 out of 5 stars (20)
12,195 users

GCalTab

GCalTab is a Thunderbird add-on that opens Google Calendar website in a Thunderbird tab. It features a beautiful dark mode thanks to the DarkReader algorithm.

Rated 5 out of 5 stars (6)
1,056 users

MailHops

MailHops maps the route an email took to get to you. Displaying the senders location, weather, user-agent and authentication used.

Rated 4 out of 5 stars (34)
1,974 users

Google Keep Tab

Adds a button to open Google Keep in a new Tab

Rated 5 out of 5 stars (23)
4,127 users