Tidybird

Organize email into folders quickly and easily.

Night and Day Dynamic

A theme that switches between sun and moon based on time of day.

This is the canonical example dynamic theme published by Mozilla: https://github.com/mdn/webextensions-examples/tree/master/dynamic-theme

Conscious ClickUp Save

Conscious ClickUp Thunderbird add-on is a extension that gives support to send/archive mails from Thunderbird to ClickUp project management platform (https://clickup.com/)
For more info: https://github.com/Ruvin/Conscious-ClickUp-Thunderbird-Plugin

Dark Reader

Dark mode for every email. Take care of your eyes, use dark theme for night and daily messaging.

BetterUnsubscribe

Adds a convenient button to the navigation bar, appearing whenever an unsubscribe option is detected in an email.

Pywalfox

Dynamic theming of Thunderbird using your Pywal colors.

https://github.com/Frewacom/pywalfox

LeftTodaySubpaneOrLogoOrClock

Append today subpane to left top or append logo or clock to left bottm.

send a gift to a friend Eunjo.

Updated as of 2021-03-31.
Updated as of 2021-08-04 for Thunderbird version 90s.

FrameWhite

FrameWhite version 141.1 was released, Thunderbird never drop down the letter.
Install Theme 1 or more, And then, manage FrameWhite, so that action is allowed.

send this gift to a friend Eunjo.

FindNow

Allows exporting messages and folders for FindNow

TaskviewGridLayout

TaksviewGridLayout works in Thunderbird version 78.0~102.*.
If clicking any task after (re)starting Thunderbird, it PERSISTs.

REQUIREMENTS:
1. 1920 x 1080 RESOLUTION
2. 100% MAGNIFICATION

Praise Stephen Kim Sou-hwan.

April 2nd 2023.

DeepDark for Thunderbird Requires Restart

Dark mode for Thunderbird UI

Weatherlicious

A dynamic theme based on weather data from OpenWeatherMap.

Two Dynamic Birds

An extension of the "Two Little Birds" and "Dracula" themes that includes a toggle button to turn on dark mode.

The position of the light/dark toggle button can be customised to avoid it covering the cute birds!

iCanban - Kanban with ICAL

No tabs

Hides the tab bar and automatically removes all inactive tabs everytime a tab is opened or switched to.