Add-ons
Message and News Reading
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LocalFolders
Add as many local folders as you want to.
New folders can reside on mapped or network locations.
Works with both TB60 through TB6813,776 users -
ExQuilla for Exchange
Thunderbird email accounts connecting to Microsoft Exchange Web Services.
15,092 users -
QuickFolders (Tabbed Folders)
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!25,261 users
Most Popular See all »
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This extension allows you to manually sort (order) your folders in the folder pane of Thunderbird or automatically sort them, but in a better way. This extension also allows you to re-order accounts in the folder pane.182,448 users -
LookOut is a plugin which allows Thunderbird to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).
Support: Thunderbird and SeaMonkey148,985 users -
Search and remove messages which are the same as other messages in your mail folders (referred to as duplicates or dupes).79,541 users -
Add symbol in header plane to switch between compact and expanded view. New beta versions for the current beta of Thunderbird 68.0 can be found at https://github.com/jmozmoz/compactheader/77,463 users -
Allows you to use your Exchange email accounts that use Outlook Web Access (OWA) with Thunderbird29,797 users -
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!25,261 users
Top Rated See all »
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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!25,261 users -
Make the “Received” column in IMAP folders show when messages were actually received.3,072 users -
Closes a Mozilla Thunderbird tab when pressing the Escape key.679 users -
No Message Pane Sort prevents accidental resorting of the message pane by disabling mouse button clicks on the column headers, thus, locking the sorting order of your emails.
It is still possible to sort messages by ctrl-clicking the header.2,433 users
Recently Added See all »
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Adds a Compact Headers button, limits displayed headers to 2 lines12 users -
This is an initial attempt to revive part of "Mark All Read Button" by Mark S Baines.
This Add-on uses the Thunderbird WebExtension APIs. It adds a button on the Mail Toolbar that marks unread messages on the current displayed folder as read.139 users -
Restart application with Ctrl+Shift+Z.
Quick restart if many windows are open, or while developing addons.130 users -
Make the default message list action be "Open Message in Conversation" when double-clicking or using the "Enter" key to open an email from the message list.174 users -
An extension to show embedded Outlook calendar (vcal / ics) parts.
Thunderbird doesn't show calendar parts from Outlook appointment emails. This addon adds a button to download the embedded appointment as ICS to import it into another calendar.606 users
See all 385 extensions in Message and News Reading »
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