Honestly it should be an extension I click on and get an instant alias email
Discussion
nostr:npub1mea2vwcu06qf7e4x00wd902vj54qnn2jacq76ldntrgfhtvhlpqqrvqane not sure if this is legit npub
If you have the proton password manager extension- it can automatically create an alias for you when you are creating an account at a new site