Having the postage prepaid, as a letter.

A conventional method of payment for wireless service where a subscriber pays for a significant portion of services and usage in arrears, subsequent to consuming the services.

Definition: Postpaid describes service plans where services are paid for after their use, usually by the service provider sending the customer a bill at the end of each billing period (for example, monthly) with a due date for payment. Note: Postpaid services differ from prepaid, where an amount is paid in advance creating a credit that is used to pay for service charges in real time.

used especially of mail; paid in advance