Mozilla released Firefox Relay as a free product that provides you with five email aliases that you can use each time you need to sign up for a random account on the internet.
See also: Mozilla Firefox: The first Chromium alternative in the Windows Store

The company has introduced a paid Premium tier for the service that will give you access to even more aliases. You'll get your own subdomain (yourdomain.mozmail.com) when you sign up and you'll be able to create an unlimited number of emails. The tier will also give you access to a summary dashboard of the emails you create, the option to use your aliases when replying to messages, and a 150kb attachment limit.
See also: Firefox reveals new homepage for Android and iOS
Once you sign up for Relay, you'll need to install the Firefox extension to take advantage of its features. Whenever you visit a website that asks for an email address, the Relay icon will appear in your browser, and you can click on it to generate a random address. The service will forward messages you receive using your aliases to your main email account, and you can block all messages from coming in, or even delete the alias if it starts to become spammy.

See also: Mozilla's Firefox 93 released with new features
In its announcement, Mozilla said it decided to introduce the paid option because many beta testers wanted more than five aliases. It didn't say how much a Premium subscription would cost in the future, but it is offering the option at an introductory price ($1/EUR1) per month for a limited time. For now, the option is only available in Canada, the United States, the United Kingdom, Malaysia, Singapore, New Zealand, Austria, Belgium, France, Germany, Ireland, the Netherlands, Spain, and Switzerland.
Information source: engadget.com
