Up & Coming Extensions
Dark mode for every email. Take care of your eyes, use dark theme for night and daily messaging.
Removes the 'Local Folders' entry from the folder pane.
(The folder itself will stay existent.)
(Based on the original work of Alex Cabal.)
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.)
The best Translator for Thunderbird 78!
Available also for Firefox!
Custom Thunderbird keybindings
Unofficial DeepL translate extension for Thunderbird.
Direction control and BiDi-related charset misdetection correction
Adds calendars containing the birthdays from your address books.
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).
Beautifully visualized statistics for your Thunderbird Email Accounts
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!
Sets the spell check dictionary based on the first recipient
Message & Address Printing Tools (NextGen)
New 78 Update! 68/78 Compatible
Adds a full sender and recipient e-mail column to message list panel.
This Addon is needed to sync your Android based smartphone with Thunderbird with the Software "MyPhoneExplorer"
Upload large attachments to your Cloud and send the link by email
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.
MailHops maps the route an email took to get to you. Displaying the senders location, weather, user-agent and authentication used.
Adds a button to open Google Keep in a new Tab