Abstract: A durable plastic mailbox for receiving mail has a removable inner container thus permitting the container to be removed from the exterior casing to empty the mail at another location. The mailbox has attachment grooves on one side and top that can engage with attachment ribs on the other side and bottom thus permitting a plurality of mailboxes to be stacked together. The mailbox has an exterior casing, substantially oblong in shape with an open front, and an inner container that fits within the exterior casing and is pivotable about internal protrusions from end walls of the casing, and is removable from the casing. A locking system retains the inner container in an upright position within the exterior casing.