A virtual mailbox is a service that provides you with a physical mailing address where your mail is received, scanned, and uploaded to a secure online platform. This allows you to view and manage your postal mail from anywhere in the world using a computer or smartphone. Virtual mailboxes are especially useful for individuals and businesses that need a permanent mailing address but want the convenience of accessing their mail remotely.

A private mailbox (PMB) is a secure mailbox rental service offered by private companies, such as Relay Shipping, where individuals and businesses can receive mail and packages. Unlike a P.O. Box, which is provided by the United States Postal Service (USPS) and located at a post office, a PMB is located at a private business location, such as a retail shipping store.