Thunderbird List-Unsubscribe Addon

This addon adds a button to the mail-view toolbar that allows you to unsubscribe from mailing lists and similar bulk mailing services as long as they use the List-Unsubscribe header as defined in RFC2369. List-Unsubscribe-Post as defined in RFC8058 is also supported.

When you click "Unsubscribe" the addon analyzes the email and depending on available options shows buttons to one-click unsubscribe, open the unsubscribe link (in the built-in browser) or use the provided unsubscribe email address to compose a new email.

Additionally you can click the exposed link to copy it to clipboard.

Permissions required

• messagesRead: Required to access the email headers.
• accountsRead: Required to fetch the correct "identity" to send the unsubscribe email from.
• clipboardWrite: Required to allow copying the unsubscribe link to clipboard.
• webRequest: Required for making the one-click unsubscribe requests. This is also why the addon needs access to all HTTP and HTTPS URLs.