Add-ons

ImportExportTools by Paolo "Kaosmos"

Adds some tools to import and export folders and messages

Collector's Note ...for Lokal Folders

Provider for Google Calendar by Philipp Kewisch

Provider for Google Calendar connects Thunderbird with Google Calendar for full task sync, conference details, and scheduling support. It offers deeper integration than Thunderbird’s native support using Google’s official API.

Collector's Note Google Calender Webside

Deutsch (de) Language Pack by Mozilla

Deutsch (de) Language Pack

Collector's Note German Language Pack

gContactSync by Josh Geenen

Synchronizes contacts & groups between Thunderbird and Google Contacts.

Collector's Note Sync all your Google Contacts form Android Smartphone with Email and also...

Quicktext by John Bieling

Quicktext is an extension for Thunderbird that lets you create templates that can be easily inserted into your own emails.

Collector's Note Form/Textfiller

Password Exporter by Justin Scott (fligtar), Jorge Villalobos

This add-on allows you to export your saved passwords and disabled login hosts using XML or CSV files that can be imported later.

Note: This add-on won't work in Firefox 57. It may eventually if the APIs to access passwords are implemented.

Collector's Note For all Emailaccounts

MinimizeToTray revived by Nils Maier

Minimizes windows into the system tray.

Collector's Note ...for Thunderbird

CompactHeader by jmozmoz

Add symbol in header plane to switch between compact and expanded view. Work only for Thunderbird 68.0 and older. Currently, there are no plans to update this for newer versions.

Collector's Note smaler toolbar

QuickFolders (Tabbed Folders) by Realraven (Axel Grude), Alexander Malfait

The "Swiss army knife" of folders. Turn your favorites into tabs - open folders and subfolders, move mails without scrolling around or searching. powerful + easy.

See new mail at a glance after automatic filtering - supports quickFilters addon!

Collector's Note Alll FOlders as Tab to sort mails easy

Check and Send by H.Ogi

Check the message contents and addresses before you send the message...

Disable Add-on Compatibility Checks by Kris Maglione

Reinstates the extensions.checkCompatibility preference without respect to the current application version.

Collector's Note allow to install old adons