Postal Service customers who want to ship human or animal cremated remains in any form — such as ashes, jewelry or keepsakes — must use the Priority Mail Express Cremated Remains Box.
Customers no longer have the option of using their own packaging.
The new rule takes effect March 1 and is designed to increase the visibility and security of these shipments through the postal network.
Cremated remains must be sent by Priority Mail Express or Priority Mail Express International.
Free box kits are available through the online Postal Store.
More information can be found in Publication 139, How to Package and Ship Cremated Remains.