Add-ons
Message and News Reading
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CompactHeader
Add symbol in header plane to switch between compact and expanded view. Options to switch between one or two lines compact view, which buttons should be displayed in header pane. New beta version available from http://compactheader.mozdev.org/
90,383 users
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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.172,397 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 SeaMonkey91,737 users -
Add symbol in header plane to switch between compact and expanded view. Options to switch between one or two lines compact view, which buttons should be displayed in header pane. New beta version available from http://compactheader.mozdev.org/90,383 users -
Search and remove messages which are the same as other messages in your mail folders (referred to as duplicates or dupes).72,881 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).31,200 users -
This addon provides a conversation view for Thunderbird, grouping messages together and allowing you to reply "inline" thus providing a more efficient workflow.25,028 users
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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!21,670 users -
Make the “Received” column in IMAP folders show when messages were actually received.2,411 users -
Closes a Mozilla Thunderbird tab when pressing the Escape key.2,874 users
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Word translation in tooltip with English⟷Croatian dictionary already incorporated.17 users -
No Message Pane Sort prevents accidental resorting of the message pane by disabling mouse button clicks on the column headers.
It is still possible to sort messages by ctrl-clicking the header.2,057 users
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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.74 users -
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.32 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.124 users -
A bugzilla companion (fixed version). Originally maintained by Fabrice Desré.28 users -
Create a new Things task from the current email you are viewing. Opens the quick add dialog with subject and message content pre-filled.
I've created this add-on as a user of Things, it is not created or endorsed by Cultured Code.88 users -
Decide whether to allow or block remote content in messages by comparing the names of the folders in which they are located to configured regular expressions.67 users
See all 382 extensions in Message and News Reading »
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