Abstract: A security mailbox with an outgoing mail pocket. Incoming mail is deposited through a hinged upper door, thereby dropping to and being contained in the bottom of the box. The upper door cooperates with an internal wedge to form a physical block that prohibits access to deposited mail from the upper door. Deposited incoming mail is instead accessible only at the back of the box through a locked access door. An outgoing mail pocket is formed on the inside of the upper door. The mail pocket is formed below the upper door such that mail being thrown into the box does not get caught on the outgoing mail pocket. The substantially rectangular box is made of heavy steel and stands upright directly on the ground, used preferably in rural settings.