You can permanently delete a mask or temporarily disable forwarding to stop receiving emails in your inbox.
Labels help you organize and sort the masks you have generated for different websites. Learn how to create them in this article.
Extensions help you customize and add functionalities to Firefox. When you use the Firefox Relay extension you can generate a mask at the time of registering on a website.
With a subscription to Firefox Relay Premium, you can block promotional emails and receive only important emails in your inbox.