You actually shouldnt makebit 25 cents to send, just make it so you need to deposit 25 cents for every mail you want to send for a 7 day period and make it triv

You actually shouldnt makebit 25 cents to send, just make it so you need to deposit 25 cents for every mail you want to send for a 7 day period and make it trivially easy for me as the recipient to cause ypu to lose that deposit in the 7 days. For example embed a url in the email that i can click to open a webpage that asks me if the email is legit or not with a big red no button and a big green yes button. Money doesnt even have to flow to me. The whole thing could be a non profit that invests the forfitted money in medical research or saving puppies or something else suitably unoffensive.