What is a Post Office Box (P.O. Box)?

A Post Office Box, commonly known as a P.O. Box, is a secure mailbox that individuals or businesses can rent at a post office. This rental service allows customers to receive their mail in a dedicated location, providing added security and privacy compared to traditional mailbox delivery at their home or business. P.O. Boxes are particularly advantageous for individuals who prefer not to disclose their residential address or for businesses that want a central and secure place to receive mail. The availability of P.O. Boxes can be convenient for those who may not be available to receive mail during regular delivery hours, as they can access their box at their convenience.

In contrast, other options describe concepts that do not accurately represent what a P.O. Box is. A P.O. Box is not simply a type of postal delivery service, nor is it a postal product sold exclusively online. Additionally, it does not refer to a mobile postal service unit; rather, it designates a physical location within a post office where customers can receive their mail securely.