This invention will allow airport customers to mail their non-permissible item/items from airport security checkpoints, to their desired destination, as opposed to discarding them or forfeiting their flight.

Embodiments of the present invention provide a delivery enclosure configurable onto a door or like platform. The enclosure includes sections forming the pair of side covers, the top cover, the bottom cover, wherein each of the sections is sized such as to enable collapsing of one section over the successive section, a scissorian assembly comprising at least two arms configured onto each of the pair of side covers connecting the sections together, a handle operationally connected to one of the arms on each of the pair of side covers, wherein a pull of the handle by a resident enables the enclosure to attain at least one of an expanded configuration and a collapsed configuration, and an electronic locking system provided on the front cover for securely locking one or more deliveries within the secure compartment.

Embodiments of a mail receptacle drop box according to the present invention include a top section and body connected by carriage bolts. The top section may be one known in the art, having a semicylindrical shape with an indented slot. A plurality of prevention mechanisms are disposed within the top section surrounding the slot to prevent unauthorized access. The body is preferably comprised of a tubular frame, with three solid outside walls and a door with a lock assembly. The body also preferably comprises an inner secondary layer comprising a series of longitudinal panels meant to delay unauthorized access into the interior of the body.

An apparatus comprising: a retaining device for retaining planar items including mail and/or documents, in which mail can be located and from which mail can be collected; a control means; a sensor means for indicating to the control means information indicative of mail and/or documents having been placed in the retaining device and/or removed from the retaining device, wherein the control means is arranged to cause, in response thereto, at least one action to be performed.