where do you get a cashier's check
Cashier's check A customer asks a bank for a cashier's check, and the bank debits the amount from the customer's account immediately, and assumes the responsibility for covering the cashier's check. That is in contrast with a personal check, in which the bank does not debit the amount from the customer's account until the check is deposited or cashed by the recipient.
Postal order A postal order is a financial instrument usually intended for sending money through the mail. It is purchased at a post office and is payable at another post office to the named recipient. A small fee for the service, known as poundage, is paid by the purchaser. In the United States, this is known as a postal money order. Postal orders are not legal tender, but a type of promissory note, similar to a cheque.