Friul

Theme with the official Friulian Flag.

Mail Delivery 4K (2004)

Mail Delivery 4K (2004) theme for Thunderbird 100+ and 4K monitors.

Mail Delivery 4K (2009)

Mail Delivery 4K (2009) theme for Thunderbird 100+ and 4K monitors.

Mail Delivery 4K (2009 Alt)

Mail Delivery 4K (2009 Alt) theme for Thunderbird 100+ and 4K monitors.

Mail Delivery 4K (Grey)

Mail Delivery 4K (Grey) theme for Thunderbird 100+ and 4K monitors.

Mail Delivery 4K (Red)

Mail Delivery 4K (Red) theme for Thunderbird 100+ and 4K monitors.

Mail Delivery 4K (2018)

Mail Delivery 4K (2018) theme for Thunderbird 100+ and 4K monitors.

Mail Delivery 4K (2023)

Mail Delivery 4K (2023) theme for Thunderbird 100+ and 4K monitors.

Dark Space Thème 9MKR

Dark Space Thème 9MKR est un thème de couleur sombre avec une image de l'espace.

twilight dark

Dark violet theme

Eldritch

Eldritch theme
https://github.com/eldritch-theme/thunderbird

rambley

i have made my last mozilla version of this to Thunderbird! :)
PS: the support website is supporting me by likeing videos and subscribing. :) pls do that ok?

Italian Army Theme

A Thunderbird theme inspired by the Italian Army.

Hatsune Miku (Chrome replica) 4K+

Hatsune Miku, a character featured in vocal synthesis software developed by Crypton Future Media, is one of Japan's most popular manga idols.

Sky Tower

A tower in the dark blue sky, with a hint of clouds and dragons.

LSP Theme

Theme for LSP Users.
Added lightsaber at bottom for progress bar in version 1.2

Cute Home

Cute Sky Dream Home Thunderbird Theme
Transform your Thunderbird with the "Cute Home" theme. Featuring a dreamy pastel sky and a whimsical floating house, this theme adds a touch of fantasy to your inbox.

Coral Tide

A modern light Thunderbird theme mixing a pastel navy blue and hot coral. I love this colour combination and I'd been looking for a nice theme that uses something similar and didn't find one so made it myself!

Dark Fox Featured

My dark version of the Firefox logo.

Thunderbird Suave Featured