I don’t know why there isn’t a way to authorize emails / domains coming thru, and reject all unauthorized emails. The amount of spam I get from other people who

I don’t know why there isn’t a way to authorize emails / domains coming thru, and reject all unauthorized emails. The amount of spam I get from other people who either forget their email address or purposely send me their email is crazy. Apparently I live in utah, London England, Scotland and Thunder Bay Canada based on the people who regularly sign up under my email address.