Firefox Decrypt is a tool to extract passwords from Mozilla (Firefox™, Waterfox™, Thunderbird®, SeaMonkey®) profiles

A set of themes for thunderbird inspired by a Monterail blog post

Dynamic theming of Firefox (and Thunderbird) using your Pywal colors

[Thunderbird Add-On] Central user interface to manage cloud accounts and to synchronize their contact, task and calendar information with Thunderbird

Sieve Script Editor

An extension for Thunderbird that allows you to view threads as "real" conversations, including your own emails. This extension also adds a bunch of useful UI features in the conversation view.

FluentBird is a userChrome.css theme for Mozilla Thunderbird, that implemenets Windows 11 Fluent Design and Mica transparency materials.

ThunderAI is a Thunderbird Addon that uses the capabilities of ChatGPT, Gemini, Claude or Ollama to enhance email management.

Send specified apps to Windows Tray

Custom keybindings for Thunderbird

DKIM Verifier Extension for Mozilla Thunderbird

Thunderbird add-on turning your emails into beautifully visualized email account stats.

🕊️ Soothing pastel theme for Thunderbird

Thunderbird privacy, security and anti-fingerprinting: a comprehensive user.js template for configuration and hardening

Extensions / Add-Ons for Mozilla Firefox and Mozilla Thunderbird

🐳 🔧 Provides Autodiscover capabilities for IMAP/POP/SMTP/LDAP services on Microsoft Outlook/Apple Mail and Autoconfig capabilities for Thunderbird

Thunderbird add-on that replaces built-in notifications with the OS native notifications

nostalgy addon updated for Thunderbird 68 and now Thunderbird 78 - 115. Original code by Alain Frisch.

Remove Duplicate Messages

A JMAP webmail.