Folders and Filters

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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!

Rated 5 out of 5 stars (129)
21,775 users

Theme Font & Size Changer for ThunderBird

Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.

Rated 3 out of 5 stars (83)
13,743 users

quickFilters Requires Restart

Quickly generate mail filters on the fly, by dragging and dropping mails and analyzing their attributes. Create a filter in less than 10 seconds, it's as easy as: drag, click, click.

By popular demand, supports SORTING filters alphabetically.

Rated 5 out of 5 stars (39)
13,279 users

Sieve

This Extension implements the ManageSieve protocol for securely managing Sieve Script on a remote IMAP server...

Rated 4 out of 5 stars (28)
9,589 users

Expression Search / GMailUI Requires Restart

Powerful message searching through expressions. Type "from:fred to:tom" to see all messages from Fred to Tom in the current view. Support 'regular expressions' and 'click to search'.

Rated 4 out of 5 stars (83)
9,336 users

Hide Local Folders Requires Restart

Removes the "Local Folders" entry from the folder pane.

Rated 4 out of 5 stars (25)
8,635 users

Awesome Auto Archive

Automatically do Archive/Copy/Delete/Move actions based on user defined rules

Rated 4 out of 5 stars (36)
8,297 users

Folder Pane View Switcher Requires Restart

Folder view arrows; switch to "All Folders" view when hovering during drag & drop; allow user to select which views are enabled or tied to the view arrows.

Rated 5 out of 5 stars (46)
8,213 users

LocalFolders Requires Restart

Add as many local folders as you want to.
New folders can reside on mapped or network locations.

Works with both TB60 through TB65

Rated 4 out of 5 stars (21)
7,094 users

Color Folders Requires Restart

Color your Folder Treeview Icons!

Rated 4 out of 5 stars (160)
4,723 users

Search Results Sort By Date Not Relevance Requires Restart

Makes search results sort by "date" instead of "relevance" by default.

Rated 5 out of 5 stars (18)
3,865 users

Search as list Requires Restart

Search results appear as list (as per the "Open email as list" button).
- return to facet view with shift+close [x]
- auto open list view when few results found
- column config./sort/toggle [IMG3&4]
- apply columns to search as list menu [IMG5]

Rated 5 out of 5 stars (48)
3,133 users

Folder Filters Button Requires Restart

Just a very simple add-on that adds a toolbar button to execute the "Run Filters on Folders" from Tools menu.

Rated 5 out of 5 stars (25)
3,010 users

IMAP Received Date Requires Restart

Make the “Received” column in IMAP folders show when messages were actually received.

Rated 5 out of 5 stars (11)
2,609 users

Disable DragAndDrop (Thunderbird) Requires Restart

A Thunderbird extension which disables drag and drop in the folder pane.
This extension prevents unintended folder movement.

Rated 5 out of 5 stars (18)
2,551 users

Colored Folders Requires Restart

Add colors to your folders in Thunderbird!
Must-have for better organisation + intuitive and speedy workfow...

This is project "Color Folders" (originally by Fisheater), corrected, resurrected, restaurated, extended and republished

Rated 5 out of 5 stars (30)
2,548 users

Archive This Requires Restart

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.

Rated 5 out of 5 stars (31)
1,380 users

QuickArchiver Requires Restart

Clean up your inbox! While moving a mail the first time, QuickArchiver remembers the destination folder and enables you to move further mails with a single click. You can apply rules by sender, recipient and subject.

Rated 4 out of 5 stars (16)
1,058 users

Mark Junk Read

Automatically marks all messages in junk folders as read.

Rated 5 out of 5 stars (8)
980 users

attachment column in search result list Requires Restart

Show the column for attachments in search results list. General search (edit-> search -> search emails) does not show by default if a message has attachments.
This addon adds this column, just as in a normal folder view.

Rated 5 out of 5 stars (2)
681 users