How many keys are assigned to the customer when renting a PO Box?

When renting a PO Box, the customer is assigned two keys. This dual-key system allows customers to access their mail securely while providing a backup in case one key is lost. The two keys policy ensures that the customer can retrieve their mail without the risk of being completely locked out, which adds an advantage to the customer experience. If a key is lost, the customer can continue accessing their PO Box with the remaining key until a replacement is requested. Additionally, sharing a PO Box with another individual becomes easier with two keys, enabling both parties access as needed. The provision of two keys strikes a balance between security and convenience for customers using USPS rental PO Boxes.