The U.S. Postal Service has taken a proactive role in the areas of aviation mail security and hazardous materials acceptance, handling, and transport for many years. But we also need your help. Each customer must comply with the restrictions outlined in this publication to assist us in securing a safe mailing environment for us all.
Are responsible for ensuring that they do not mail any hazardous material that can injure persons or property unless the hazardous material is permitted under the mailing standards. Further guidance on domestic, international, and APO/FPO/DPO mailability is available from Publication 52, Hazardous, Restricted, and Perishable Mail.The Mailing Standards of the United States Postal Service,International Mail Manual (IMM®) contains the standards that apply to hazardous materials intended for foreign addresses.
