Postal Explorer > Mailing Standards of the United States Postal Service, International Mail Manual > 1 International Mail Services > 130 Mailability > 139 Cremated Remains
Cremated remains (human and animal ashes) are permitted to be mailed internationally under the following conditions:
The mailer must package cremated remains (human or animal ashes) in a sealed and siftproof funeral urn. The mailer must place the urn into a strong and durable outer container, and must pack the outer container with sufficient cushioning material to prevent shifting during transit. The outer container must be siftproof to prevent powders from escaping and thereby soiling, damaging, or destroying another mailpiece or any postal equipment, or from causing discomfort to a person. Also see Publication 52, Packaging Instruction 10B.
The mailer must indicate the identity of the contents on the required applicable customs declaration form (see 123.61).