Contact us

Use the links below to get help, to keep up to date with add-ons news, and to give us feedback.

Add-ons forum

Use the Add-ons Discourse forum to discuss all aspects of add-on development and to request help.

Mailing lists

The dev-addons mailing list was retired on December 1, 2020. You can view the dev-addons archives to see past discussions about the WebExtensions API and


Matrix is an open, lightweight protocol for decentralized, real-time communications. For information on how to join Mozilla's Matrix instance, refer to the Matrix page on MozillaWiki.

  • Add-ons (support for extensions, themes, and the WebExtensions API)
  • AMO (discussion around

Report problems

Security vulnerabilities

If you discover an add-on security vulnerability, even if the add-on is not hosted on a Mozilla site, please notify us. We will work with the developer to correct the issue. Please report security vulnerabilities confidentially in Bugzillaor by emailing

Bugs on (AMO)

If you find a problem with the site, we'd love to fix it. Please file a bug report and include as much detail as possible.