How about making it harder to subscribe with email address that you do not own? Some silly sausage is using my email address while shopping and I am receiving t

How about making it harder to subscribe with email address that you do not own? Some silly sausage is using my email address while shopping and I am receiving their clothing receipts. I am still convinced, that clicking "unsubscribe" only provides information that email address is used and that leads to even more spam from even more unusual places. E.g. fake dating websites, where new one is created almost each month just to be replaced by another. And they keep sending a lot of spam.