Thunderbird WebExtension APIs¶
Thunderbird WebExtensions are very similar to those of Firefox. These documents assume you have some familiarity with building a WebExtension for Firefox. If not, it is highly recommended to begin by reading some of the MDN documentation on the subject.
The documents were generated automatically from the schema documents at mail/components/extensions/schemas.
This documentation is for Thunderbird 68. See the “latest” version for pre-release versions of Thunderbird.
For any problems or feature requests please file a bug.
In Thunderbird, all WebExtension API can be accessed through the browser.* namespace, as with Firefox, but also through the messenger.* namespace, which is a better fit for Thunderbird.
The following APIs are also included and work as they do in Firefox:
Where To Get Help¶
- developer.thunderbird.net for information about building Thunderbird, and creating extensions.
- Add-ons message board for Thunderbird add-on developers to ask questions and share knowledge.
- Bugzilla for bug reports and feature requests.
- developer.mozilla.org for Firefox WebExtensions, on which Thunderbird’s are based.