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!23,260 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 TB6810,848 users -
ExQuilla for Exchange
Thunderbird email accounts connecting to Microsoft Exchange Web Services.
14,847 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.179,139 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 SeaMonkey138,048 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/79,322 users -
Search and remove messages which are the same as other messages in your mail folders (referred to as duplicates or dupes).76,659 users -
Allows you to use your Exchange email accounts that use Outlook Web Access (OWA) with Thunderbird25,453 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!23,260 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!23,260 users -
Make the “Received” column in IMAP folders show when messages were actually received.2,935 users -
Closes a Mozilla Thunderbird tab when pressing the Escape key.2,193 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.2,269 users -
Provides keyboard shortcuts for filing messages into nine configurable "favorite" folders using user-defined keys. Also provides a simple filter system with a keyboard shortcut to file the currently selected message(s) into the correct folder.903 users
Recently Added See all »
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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.34 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.1,706 users -
This add-on is a (work in progress) fixed version of the original Add-on "AttachmentExtractor" which is no longer supported and fixed by the original author.
It Extracts all attachments from selected messages and then can delete, detach...2,596 users -
Allows you to use your Exchange email accounts that use Outlook Web Access (OWA) with Thunderbird25,453 users
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Sets the urgent flag (X11) of the Thunderbird window under Linux in case of new messages. Does ignore special folders like Drafts, Junk and such.15 users
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Users of Office 365 Advanced Threat Protection wil change
all url's in emails to redirect them to an Microsoft filter before opening.
This plugin wil change the url back to the original value.159 users
See all 378 extensions in Message and News Reading »
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