You don't have to use the custom @domain.mozmail.com address with Firefox Relay—you can use @mozmail.com with one of the auto-generated random aliases. Your co

You don't have to use the custom @domain.mozmail.com address with Firefox Relay—you can use @mozmail.com with one of the auto-generated random aliases. Your complaint is similar to using RFC 822 "me+site.com@domain.com" style emails and then worrying that sites are going to learn that your real email is "me@domain.com" by stripping off the part after the plus sign. Call me optimistic or naive, but I don't think that sites are doing that... https://people.cs.rutgers.edu/~watrous/plus-signs-in-email-addresses.html https://people.cs.rutgers.edu/~watrous/plus-signs-in-email-a...