Tidybird

Organize email into folders quickly and easily.

BetterUnsubscribe

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

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

BulkDelete

Thunderbird MailExtension designed to help you efficiently bulk delete emails with multiple filtering options.

Dark Reader

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

Sortana

Sortana adds AI-powered email filtering to Thunderbird. Configure your own endpoint and tailor prompts to automatically classify messages. Tune generation settings, cache results across restarts, and debug with colorized logs.

Everforest Night

A green-based theme for Thunderbird, designed to stay warm and readable during long sessions.
Source code: https://github.com/jarith/everforest-night-thunderbird

Pywalfox

Dynamic theming of Thunderbird using your Pywal colors.

https://github.com/Frewacom/pywalfox

RSS Ninja

RSS Ninja is a fast, privacy-focused RSS reader built right into your Thunderbirds sidebar. 14-Day Free Trial Every feature. Unlimited feeds. No card required. No commitment. Cancel any time.

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.

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.

FindNow

Allows exporting messages and folders for FindNow

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.