ELI5: Explain Like I'm 5

Commercial mail receiving agency

A commercial mail receiving agency (CMRA) is a service that helps people receive mail they wouldn't normally be able to get. It works like this: you give the CMRA your name and address and then they get your mail and put it in a special box that only you can open. Your mail stays safe and you can pick it up anytime you want. CMRA's are especially useful if you're moving a lot, don't have your own address, or just want to keep your mail away from your home.