The UPU has long condemned the use of the postal network as a conduit for crime. The Regulations to the Convention define items not admitted through customs, including narcotics:
To find the UPU International Bureau Circulars, please visit the Universal Postal Union website.
S58 Postal security standard: General security measures defines the minimum physical and process security requirements applicable to critical facilities within the postal network.
S59 Postal security standard: Office of exchange and international airmail security defines minimum requirements for secure operations relating to the transport of international mail.
