Sieve Script Editor

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

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

Extensions / Add-Ons for Mozilla Firefox and Mozilla Thunderbird

External Editor Revived is a Thunderbird MailExtension which allows editing emails in programs such as Vim, Neovim, Emacs, etc.

Remove Duplicate Messages

Quick Folder Move Add-on for Thunderbird

Монгол үгийн алдаа шалгах толь, Mongolian spellchecking dictionary

Fork of LookOut (fix version)

Monterail Full Dark, a Thunderbird theme inspired by the mockup of Monterail

Outlook style headers and few goodies for Thunderbird

This provider add-on adds Google synchronization capabilities to TbSync. Only contacts and contact groups are currently managed, using Google's People API.

Thunderbird add-on to display spam scores according to mail headers. Supports spam/ham score headers of Rspamd and SpamAssassin. The add-on adds a column with the overall spam score to the mail list view and shows details of any matched spam/ham rule.

This addon adds awesome statistics to your beloved Thunderbird!

Thunderbird add-on to show full sender and recipient address column in message list

Primitive Thunderbird plugin for communicating with MS Exchange via Exchange Web Services (EWS)

Thunderbird extension for the Todo.txt application.

A thunderbird mailextension for explicitely choosing the correct sender identity before opening an email editor.

Thunderbird filelink plugin

Easily export your Thunderbird emails to Joplin.