Appearance and Customization

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TabsInStatusbar&IconsInMenubar

Move tabs in status bar and iconify menu bar.

This add-on researches new tabs' position and menubar iconification.
This add-on is as role as if task bar of Windows.

To Hyun-geol who I like.

Life in Holy Spirit.

Rated 5 out of 5 stars (2)
6 users
Added Oct. 16, 2020

UrgentMail

Raise X11 urgent flag if new mail is received.

This addon listens for incoming mails and causes the Thunderbird window to draw attention.

Rated 5 out of 5 stars (3)
253 users
Added Oct. 14, 2020

Mahour-Iranian-Date

This add-on adds a new column called "تاریخ" ("Date (Persian)" since V1.1.3) in message list containing Iranian Date.

It is reimplementation of Iranian date for Thunderbird 78. The source is based on Full address column by Łukasz Kosson.

Rated 5 out of 5 stars (5)
11 users
Added Oct. 2, 2020

Filter on Folder Button

new in version 1.5.1:
code optimised for Thunderbird version >= 115

new in version 1.5:
code changed to popup menu

functions:
new menu button with filter functions, with hotkeys, theme support, more languages

Rated 4 out of 5 stars (25)
1,174 users
Added Oct. 2, 2020

Spam Scores

Displays spam scores according to mail headers. Supports spam/ham score headers of Rspamd, SpamAssassin and MailScanner. The add-on adds a column with the overall spam score to the mail list view and shows details of any matched spam/ham rule.

Rated 4 out of 5 stars (16)
388 users
Added Sept. 29, 2020

Full Address Column

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

Rated 5 out of 5 stars (68)
1,356 users
Added Sept. 21, 2020

ScrollAnywhere

Scroll without touching the scroll-bar!
Press Middle (Right / Left) mouse button anywhere on the page to scroll just like with scrollbar.

Features also:
- "grab and drag" scrolling
- customizable scrollbars!
- the Momentum auto-scroll

Rated 5 out of 5 stars (1)
364 users
Added Sept. 12, 2020

Quote Colors & Collapse

Configure text and background colors of quotes in mail and news messages. From up addon version 3 (Thunderbird 91) you can collapse quotes.

Rated 5 out of 5 stars (15)
4,194 users
Added Sept. 9, 2020

Message Header Toolbar Customize

You can change icon display and button order. You can also hide unnecessary buttons.

Rated 5 out of 5 stars (48)
4,706 users
Added Sept. 7, 2020

tbkeys-lite

Custom Thunderbird keybindings

This add-on is a follow on to Keyconfig which is no longer supported.

It is aimed at power users. Please look at the GitHub site before leaving a one star review about documentation or usability.

Rated 5 out of 5 stars (57)
3,746 users
Added Sept. 5, 2020

Next Unread Thread (Mark All Read)

Adds a Thread button, marks current thread or conversation as read and moves to the next unread message

Rated 5 out of 5 stars (4)
110 users
Added Aug. 16, 2020

Next Unread Group (Mark All Read)

Adds a Group button, marks current newsgroup or folder as read and moves to the next unread message

Rated 5 out of 5 stars (3)
109 users
Added Aug. 16, 2020

Eventview

It seems like taskview,
but it would be enough with a small size because event is different to task.

Version 9.7 for Thunderbird version 90s was updated as of 2021-08-04.

Be a light.
I thank God!

Not yet rated
7 users
Added July 31, 2020

Pywalfox

Dynamic theming of Thunderbird using your Pywal colors.

https://github.com/Frewacom/pywalfox

Rated 3 out of 5 stars (6)
305 users
Added July 23, 2020

Mark All Read:WE

Mark all read (Web extension) - Adds a toolbar button to mark all unread messages in current folder as read.

*Note*
This addon works much better in newer versions of Thunderbird (v91). Thunderbird's WebAPI's were very patchy in older versions.

Rated 3 out of 5 stars (19)
990 users
Added July 20, 2020

Preferences Button

Adds a Preferences button

Rated 5 out of 5 stars (1)
335 users
Added July 16, 2020

Ordinal Requires Restart

Adds a column type named "#" that displays row numbers in a message list. Sorting by this column does nothing.

Not yet rated
2 users
Added July 1, 2020

Clacks Overhead

In tribute to the late Sir Terry Pratchett, many users are adding the message "GNU Terry Pratchett" into the email header "X-Clacks-Overhead". Clacks Overhead shows users when this appears in their emails and displays the message included.

Rated 5 out of 5 stars (1)
36 users
Added June 25, 2020

PrintingTools NG

PrintingTools NG enables many layout and formatting options for printing messages with header borders, sorting, attachment lists etc. PDF output can be auto named and Page options can ease printer settings.

It is your printing toolbox.

Rated 4 out of 5 stars (38)
25,659 users
Added June 5, 2020

Weatherlicious

A dynamic theme based on weather data from OpenWeatherMap.

Rated 4 out of 5 stars (8)
379 users
Added April 9, 2020