Any postal workers on the board? Got a question or two...

Hmm...couple more questions....you have the cluster box for delivery, correct? One central locked box for your neighborhood? Guessing that the carrier left you the notification slip?
Just for common knowledge....the USPS has its own bible of sorts. It is called the Domestic Mail Manual. The DMM is basically the standard operating procedure of the USPS.
Domestic Mail Manual | Postal Explorer