US Patent 7549572 Secure mail box

A mail box having a depository vault overlying a secure compartment. A main door and a flag door are independently rotatable to open and close an opening in the depository vault. The main door is attached to a mail platform for receiving mail in the depository vault. If the mail placed on the mail platform is incoming mail, the main door is rotated by the postman to the closed position to rotate the platform and deliver the incoming mail to the underlying secure compartment. If the mail placed on the platform is outgoing mail, the flag door is rotated by the user of the mail box to the closed position to provide an indication to the postman that the mail is to be picked up and delivered to the destination.