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Emoji

It permits just with a single click to copy an emoji.
There is a search-box and the "Most used emojis" section (the first one).

If you want to send feedback or report bug, please go to https://github.com/Sav22999/emoji

Rated 5 out of 5 stars (11)
5,570 users

MoreLayouts

Adds additional Wide Thread View and Stacked View to Thunderbird along with Reversed views. Plus configurable Fullscreen F11 and Message Pane F8 toggles. Also starring Vertical Tabs.

Rated 5 out of 5 stars (11)
142 users

Full Address Column

Adds a full sender and recipient e-mail column to message list panel.

Rated 5 out of 5 stars (68)
1,489 users

Header Tools Improved

Allows to modify headers and source of messages

Rated 5 out of 5 stars (36)
2,463 users

Rise of the Tools

Moves the toolbar back above the tabbar.

Rated 5 out of 5 stars (66)
412 users

ConQuery Requires Restart

Context searching for everyone and URL manipulation tool for advanced users...

Rated 5 out of 5 stars (36)
1 user

MinimizeToTray For FF 3.5 Requires Restart

MinimizeToTray For firefox 3.Minimizes Mozilla windows into the system tray.Note:I am going to remove this extension if the original creator make a FF 3 version!

Rated 5 out of 5 stars (122)
1 user

Nagios Checker Requires Restart

The statusbar indicator of the events from the network monitoring system Nagios.

Rated 5 out of 5 stars (69)
0 users

Mail Merge

Create and Save or Send Multiple Individual and Personalized Messages from a Draft

Rated 5 out of 5 stars (225)
72,256 users

Addons Manager Hilite

Remembers last selected (hilited) extension/theme/plugin/userstyle in Add-ons Manager. Version 3.0 also includes sorting buttons. Turn off/on the add-on selection list box and/or fine tune behavior via its Options.

Rated 5 out of 5 stars (19)
1 user

WarnAttachment

WarnAttachment shows an additional dialog to confirm potentially dangerous attachments. Some attachments like executables etc. are completely blocked. This reduces the risk of malware especially for inexperienced users.

Rated 5 out of 5 stars (10)
3,364 users

Thunderbird Todoist

Extension to add emails as tasks to Todoist.

Rated 5 out of 5 stars (10)
1,216 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 (36)
626 users

quickFilters

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 (68)
14,569 users

QuickNote Requires Restart

A simple note-taking extension.

Rated 5 out of 5 stars (204)
69 users

Console² Requires Restart

Console² (pronounced Console Squared or Console Two) replaces the JavaScript Console with what could be the next generation Error Console. From v0.5 includes the Console Filter extension previously available separately from the Console² website.

Rated 5 out of 5 stars (47)
7 users

AddressLabel Requires Restart

Create address labels from selected contacts in pdf, odt, ps or html.

Usage
1) Chose settings.
2) In the Address Book, select contacts and right click.
3) Print with "Actual Size" (not "Fit to Page").

Rated 5 out of 5 stars (4)
1 user

quicker quicksearch

make searching for emails faster:

Automatically insert into the quickfilter box: the author, subject or the email domain of the selected email.


No need to retype the address, if you want to search for all emails of this author.

Rated 5 out of 5 stars (7)
1,230 users

External Editor Revived

Edit emails in external editors such as Vim, Neovim, Emacs, etc.

Rated 5 out of 5 stars (7)
347 users

Send Later

True "Send Later" functionality to schedule the time for sending an email.

Rated 5 out of 5 stars (263)
109,138 users