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DeepDark for Thunderbird Requires Restart

Dark mode for Thunderbird UI

Rated 5 out of 5 stars (44)
113 users

TT DeepDark Requires Restart

Simple and smooth dark complete theme for Thunderbird

Rated 5 out of 5 stars (271)
243 users

Hide Local Folders for TB78++

Removes the 'Local Folders' entry from the folder pane.
(The folder itself will stay existent.)
(Based on the original work of Alex Cabal.)

Rated 5 out of 5 stars (17)
5,107 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 (15)
145 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 (30)
1,040 users

No Message Pane Sort

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.

Rated 5 out of 5 stars (54)
3,756 users

Korean spellchecker

Korean (ko-KR) spellchecker

Rated 5 out of 5 stars (12)
378 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 (19)
68 users

GCalTab

GCalTab is a Thunderbird add-on that opens Google Calendar website in a Thunderbird tab. It features a beautiful dark mode thanks to the DarkReader algorithm.

Rated 5 out of 5 stars (11)
1,674 users

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.

Rated 5 out of 5 stars (10)
15 users

Disable DragAndDrop (for Thunderbird 68+)

Disable drag and drop on the folder tree in order to prevent unintended folder movement.

Rated 5 out of 5 stars (17)
2,902 users

MS Office 2003 JB Edition Requires Restart

MS Office 2003 Theme.

Rated 5 out of 5 stars (77)
319 users

Textmarker

Highlights selected text when composing emails. Default colour is yellow - other colours are available via Options.
(Works only during writing an e-mail, i.e. only in the compose window.)

Rated 5 out of 5 stars (30)
34,077 users

Walnut2 for Thunderbird Requires Restart

Walnut2 for Thunderbird, based on icons from art.gnome.org. Walnut2 is based on Walnut but with better looking wood panels.
Supports Thunderbird versions 53.0 to 60.0. From version 61.0, Thunderbird will drop support for full custom themes.

Rated 5 out of 5 stars (80)
91 users

Limit non-BCC recipients

Check that number of non-BCC recipients does not exceed a parameter.

Rated 5 out of 5 stars (9)
678 users

Search Button

Toolbar button to invoke message search dialog window.

Rated 5 out of 5 stars (9)
2,412 users

Auto Address Cleaner T

Remove comment, display name from addresses before sending mail.

This add-on is a fork of Auto Address Cleaner.
https://addons.thunderbird.net/thunderbird/addon/auto-address-cleaner/

Rated 5 out of 5 stars (9)
8,061 users

Send and File Requires Restart

Allows to file outgoing messages in folder you prefer

Rated 5 out of 5 stars (20)
7 users

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!

Rated 5 out of 5 stars (187)
14,322 users

Noia Fox Requires Restart

Theme for Firefox and Thunderbird
Based on Noia Iconpack by Carlitus (deviantART)

Noia Fox options is here (small icons, square tabs,...).

Rated 5 out of 5 stars (158)
1 user