I'll click unsubscribe for some of my users (I manage about 6-10 mailboxes) if I feel that the sender isn't honoring my request or requires I sign in to complet

I'll click unsubscribe for some of my users (I manage about 6-10 mailboxes) if I feel that the sender isn't honoring my request or requires I sign in to complete the request then I black list the domain.