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!
Search Results Sort By Date Not Relevance Requires Restart
Makes search results sort by "date" instead of "relevance" by default.
Provider for Exchange ActiveSync Requires Restart
Add sync support for Exchange ActiveSync (EAS v2.5 & v14.0) accounts to TbSync
DeepDark for Thunderbird Requires Restart Featured
Dark mode for Thunderbird UI
IMAP Received Date Requires Restart
Make the “Received” column in IMAP folders show when messages were actually received.
Disable DragAndDrop (Thunderbird) Requires Restart
A Thunderbird extension which disables drag and drop in the folder pane.
This extension prevents unintended folder movement.
Grammalecte [fr] (for Thunderbird) Requires Restart
French grammar checker. Included: conjugation tool, text formatter and spelling dictionaries.
Close tab on ESC Requires Restart
Closes a Mozilla Thunderbird tab when pressing the Escape key.
GlodaQuilla search indexing enhancements Requires Restart
Permits selective enabling and disabling of search indexing on folders or accounts - with inheritence. Also adds three columns to the Thunderbird message pane that are useful in debugging.
Password Tags Requires Restart
Adds metadata and sortable tags to the password manager.
Phoenity Icons Requires Restart
Phoenity icons for Thunderbird
Thunderbird HTML editor. This add-on adds a HTML tab to the composition window where you can see and edit the HTML source of the message.
Upload large attachments to your Cloud and send the link by email
Send and File Requires Restart
Allows to file outgoing messages in folder you prefer
HTitle (discontinued) Requires Restart
Hide title bar if window is maximized.
This add-on has been discontinued!
Legacy extensions support will be dropped in Firefox 57. If you interest in CSD on Linux, please track progress on https://bugzilla.mozilla.org/show_bug.cgi?id=1283299.
No Message Pane Sort Requires Restart
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.
Subject Manager Requires Restart
Manages subject of composed emails.
Edit Email Subject Requires Restart
Edit Email Subject for Thunderbird
Get Selected Mails Requires Restart
Gets new messages for selected mail accounts.
TbSync Requires Restart
TbSync is a central user interface to manage cloud accounts and synchronize their contact, task and calendar information with Thunderbird.