Add-ons

LaTeX It! by Jonathan Protzenko

This addons allows you to write LaTeX expressions in your emails such as $x^2$ or $$\sum_{x=0}\infty$$ and have them all replaced by a PNG image with the corresponding formula inside.

*Note: this addon is not compatible with Thunderbird 78+*

Unmangle Microsoft ATP Safelinks by Peter Havekes

Users of outlook.com and o365 who have Advanced Thread Protection enabled will have all URL's in emails changed to redirect them to an Microsoft filter before opening. This is a bad idea.

This plugin will change the URL back to the original value.

Encrypt if possible by GWu

Sets message security option "encrypt message", if valid X509 certificates are found for all recipients.

ThunderStats! Your Thunderbird Statistics! by Mic, Christopher Leidigh

Do you remember the old good Eudora statistics? Do you miss them?
Using this addon you can finally keep an eye on how you use your beloved Thunderbird!

FileLink provider for WebDAV by Geoff Lankow, John Bieling

Uploads your large attachments to your WebDAV account instead of sending them by email.

Display Mail User Agent T by Toshi

Displays the mail program with which the selected mail was written

*This addon is compatible with Thunderbird after Web Extesnsions support. Since development and operation check are done on Daily, it may not work on normal Thunderbird.

tbkeys-lite by will

Custom Thunderbird keybindings

This add-on is a follow on to Keyconfig which is no longer supported.

It is aimed at power users. Please look at the GitHub site before leaving a one star review about documentation or usability.

Collector's Note Actually I use the GH version, the full tbkeys

Profile Switcher by Dillinger

Adds options to launch other profiles.

Collector's Note Home directories are not mean't for mail

Use BCC Instead C by DaveRo

This addon prevents you accidentally sending an email to a large number of recipients without hiding their addresses from each other by using BCC. It is for TBv68.

IT WILL NOT BE UPDATED FOR TBv78.
Try my addon 'Limit non-BCC recipients'

Full Address Column by lkosson

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

FileLink Provider for Dropbox by Geoff Lankow

Uploads your large attachments to your Dropbox instead of sending them by email. This uses Thunderbird's FileLink feature.

DeepDark for Thunderbird by steva

Dark mode for Thunderbird UI

Collector's Note The only theme for TB

Provider for CalDAV & CardDAV by John Bieling

This extension adds support for CalDAV & CardDAV accounts to the Thunderbird Sync manager "TbSync". Including iCloud, ownCloud, Nextcloud, Radicale and many more.

Collector's Note Much more elegant than gContanctSync

GCalTab by Florent Tassy

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.

Collector's Note For when Lightning just can't cut it.

FileLink Provider for Box by Geoff Lankow

Uploads your large attachments to your Box instead of sending them by email.