Up & Coming Extensions
Emoji Menu Requires Restart
Adds the ability to easily insert emojis into your composed messages in Thunderbird.
Folder Account Requires Restart
Lets you associate user accounts and identities with specific folders. Great for multiple users who share TB, or for managing mailing lists.
Mark All Read Button Requires Restart
Adds toolbar buttons to Mark All emails as Read, Mark Thread as Read, and Goto Next Unread Thread.
Year view Requires Restart
Year view for calendar.
Close tab on ESC Requires Restart
Closes a Mozilla Thunderbird tab when pressing the Escape key.
QuickFolders (Tabbed Folders) Requires Restart
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!
ThunderCal Requires Restart
ThunderCal simply gives you a toolbar button that you can use to run Google Calendar inside Thunderbird. Inspired by the ThunderWave add-on.
Lightbird Requires Restart
Standalone calendar UI for Lightning
Message Notes Plus Requires Restart
Message Notes Plus allows to add notes to emails. The notes don't affect the email in any way.
They are stored locally on your hard drive.
The commercial version of the add-on allows to share notes with other users: http://msgnotes.alehro00.com
ICS Inspector Requires Restart
Gather the senders ! Requires Restart
Select all the mails in a directory sent by the selected authors.
XNote++ Requires Restart
Persistent sticky notes for Thunderbird associated to mails.
This is a port to Thunderbird >= 3 based on XNote 2.1.0 ( https://addons.mozilla.org/en-US/thunderbird/addon/3093 ) with bugfixes and additional features.
Lightning Month Tabs Requires Restart
This addon adds month tabs into Lightning calendar month view
Dcurrency Requires Restart
Currency exchange rates in the status bar (data from Yahoo!Finance or Google on option).
Display currency graphs.
Identity Chooser Requires Restart
Identity Chooser helps you to always use the correct identity when composing a new email.
Image Zoom (ugly fixes) Requires Restart
An ugly attempt at fixing Image Zoom
Copy Sent to Current Requires Restart
Allows to place a copy of sent messages (aka FCC) into the currently active folder or any other folder you choose, when you create the message. Usually the copies are placed into the 'Sent' folder. For replies, you may also move the original message.
DKIM Verifier Requires Restart
Verifies the DKIM-Signature of an e-mail.
Mail Merge Requires Restart Featured
Mass Mail and Personal Mail
Account Colors Requires Restart
Associates user-defined colors with accounts and identities. Applies these colors to accounts, identities, folders, message list, message headers and compose headers. Users will always know which accounts/identities they are working with.