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Thunderbird Hello World Extension

A tutorial for creating a basic Thunderbird extension with a toolbar button and popup.

Field note

What it does

This page provides a step-by-step guide to create a simple Thunderbird extension that adds a 'Hello World' button to the toolbar, with a popup showing a message. It covers manifest.json, browser_action, popup files, testing, and packaging.

Capabilities

Available capabilities

Browser Action Manifest V3 Popup

A Guide to Extensions

Thunderbird Hello World Extension

What it does

Available capabilities

Tags

Ways to use it

Product features

A Guide to Extensions

Background Page

CloudFile Management Scripts

Content Scripts

Defining one or more background scripts directly

Experiment APIs

Extension Icons

Options Page

Permissions

The manifest.json file

User Interface Elements

WebExtension Scripts