The Firefox web browser is adding a feature that will make an email alias with 1 click, and keep your address to yourself. It will hide your real email address from advertisers and spam operators when filling in online forms.
The service entered testing last month and is currently in a closed beta, with a public beta currently scheduled for later this year. Private Relay will be available as a Firefox add-on that lets users generate a unique email address — an email alias — with one click.
The user can then enter this email address in web forms to send contact requests, subscribe to newsletters, and register new accounts.
You can find the Private Relay web site at https://relay.firefox.com/.