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Thunderbird MailExtensions

Guide to creating Thunderbird extensions using WebExtension APIs.

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Field note

What it does

How to create extensions for Thunderbird, covering manifest.json, icons, background pages, options, UI elements, permissions, and scripts.

Capabilities

Available capabilities

UI Elements Manifest Configuration WebExtension Scripts Permissions Background Page Options Page

Tags

Tags

Thunderbird WebExtension Add-on Development

Ways to use it

Ways to use it

sdk

JavaScript / https://developer.thunderbird.net/add-ons/mailextensions

Product features

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