Add-ons
Newest Extensions
Sort by:
Blurple
Blurple: A calming blend of blue and purple.
Start blurpmaxxing today.
Modern Theme Green
Modern Theme Green thats easy for the eyes and ported from Firefox for a seemless web experience.
Modern Theme
Seemless experience for Firefox & Thunderbird!
The Modern Theme aims for a lightweighted and eye-friendly design. Based on Dark Mode, it uses a contrasty combination of a unique blue-green-turquoise blend combined with sunset orange.
Dark Shadows XT
Quite dark theme, based on shades of grey colors, with blue and green accents.
3DTriangles
A Mozilla Thunderbird theme with 3D Objets and transparent design
Arc Theme for Thunderbird
Another Thunderbird theme inspired by the Arc theme.
Dark Space Thème 9MKR
Dark Space Thème 9MKR est un thème de couleur sombre avec une image de l'espace.
Mail Delivery 4K (2023)
Mail Delivery 4K (2023) 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 (Red)
Mail Delivery 4K (Red) 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 (2009 Alt)
Mail Delivery 4K (2009 Alt) 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 (2004)
Mail Delivery 4K (2004) theme for Thunderbird 100+ and 4K monitors.
KDE Breeze Dark - Mountains
A theme to fit KDE Breeze Dark, with automatic color selection, and using the new Mountains wallpaper
To create your own collections, you must have a Mozilla Add-ons account.
