Trust me you won't make a cent from reading emails. I once spent time on an email reading site, when I got to the minimum payout and I requested for payment I was blocked. I didn't even know why and no reasonable explanation was given. Even though the payout was low it took me several weeks to reached it, and all the time and data and energy I wasted on it. They are scams, no one pays you for reading emails, or if you are sure of the site you are promoting then give us proof that you have been paid.