what is a certified mail-receipt
Certified Mail Receipt. If you mail a letter USPS Certified Mail the Post Office provides the mailer with (2) mail receipts. The first certified mail receipt is many times described as âproof-of-acceptanceâ this is a receipt from the Post Office that they accepted your letter on a specific date and time to prove your letter was mailed. The second is referred to as âproof of deliveryâ.