Add-ons
Message and News Reading
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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!25,495 users -
ExQuilla for Exchange
Thunderbird email accounts connecting to Microsoft Exchange Web Services.
14,486 users -
LocalFolders
Add as many local folders as you want to.
New folders can reside on mapped or network locations.
Works with both TB60 through TB6814,045 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.180,499 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 SeaMonkey139,235 users -
Search and remove messages which are the same as other messages in your mail folders (referred to as duplicates or dupes).76,996 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/76,285 users -
Allows you to use your Exchange email accounts that use Outlook Web Access (OWA) with Thunderbird31,236 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!25,495 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!25,495 users -
Make the “Received” column in IMAP folders show when messages were actually received.2,865 users -
Closes a Mozilla Thunderbird tab when pressing the Escape key.584 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.2,468 users
Recently Added See all »
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MessagePreview adds a column to the Thunderbird message list to display the message preview in a tooltip on column row icon mouse hover or a short preview in the column row itself.23 users -
Adds a Preview Button, toggles the message preview50 users -
Adds a twisty to the headers, limits displayed headers to 2 lines54 users -
BrowseInTab lets you open and browse any link in a Thunderbird content tab. Links are followed within the tab and back/forward navigation is supported.38 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.163 users
See all 385 extensions in Message and News Reading »
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