Shipping Ashes via USPS — How to Mail Cremated Remains to a Jewelry Maker

USPS Is the Only Legal Option for Human Remains

This is the most important rule in domestic ash shipping: the United States Postal Service is the only carrier permitted to transport human or animal cremated remains within the US. Sending remains through UPS, FedEx, DHL, or another private carrier violates federal guidelines and carrier contracts and risks package seizure.

This rule applies to all quantities — including the tiny sample you'd send to a jewelry maker. A quarter-teaspoon of ashes in a small vial still must ship via USPS.

Required: Priority Mail Express Only

Within the USPS system, cremated remains must be sent exclusively via Priority Mail Express (domestic) or Priority Mail Express International (cross-border). Lower-tier services like Ground Advantage, First-Class Mail, or standard Priority Mail are not permitted.

Priority Mail Express is the required USPS service tier. Check the current USPS terms for the tracking, insurance, and delivery guarantee available for your shipment.

The BOX-CRE Packaging Requirement

Effective March 1, 2025, USPS requires cremated-remains shipments to use its orange-accented Cremated Remains packaging, designated BOX-CRE. You cannot use your own box, a generic Priority Mail box, or any other container.

BOX-CRE boxes are free and can be ordered through the USPS Postal Store (usps.com). They come in a specific size designed for cremation shipments and include pre-printed handling labels.

How to Package a Jewelry Sample

For a small sample destined for a cremation jewelry maker, the full process:

1. Prepare the inner container. Place the ashes (typically one-quarter to one-half teaspoon) into a sift-proof container — a threaded glass vial, a sealed metal tin, or the vendor-provided sample container. The container must be completely sift-proof: no ashes can escape under normal handling conditions.

2. Bag the inner container. Place the sealed inner container inside a zip-lock plastic bag. This is your secondary containment layer.

3. Cushion inside the BOX-CRE. Surround the bagged inner container with dense bubble wrap or packing material inside the BOX-CRE box. The vial should not shift or rattle when the box is shaken.

4. Include identification. Place a slip of paper inside the box with the sender's full name, address, and phone number, plus the recipient's full name, address, and phone number. This backup identification is required in case the outer label is damaged.

5. Apply Label 139. Orange USPS Label 139 (Cremated Remains) must be applied to all six sides of the outer box — top, bottom, front, back, left, and right. These labels come with the BOX-CRE packaging or can be requested at the counter.

6. Ship via Priority Mail Express. At the post office counter, specify Priority Mail Express and declare the contents as cremated remains. The clerk will apply the correct service barcode.

What About Small Samples? Still the Same Rules?

Yes. The rules don't distinguish between a full urn and a quarter-teaspoon sample. Any amount of human cremated remains shipped through the mail must follow the full BOX-CRE + Priority Mail Express + Label 139 protocol. The regulations exist to ensure proper handling throughout the postal system — automated sorting equipment processes packages at high speeds, and the labeling triggers manual sorting to protect fragile contents.

Canada and UK Alternatives

Canada Post allows domestic shipment of cremated remains via Priority, Xpresspost, or Expedited Parcel. The inner container must be sift-proof, cushioned, and a certified copy of the Certificate of Cremation must be taped in a clear plastic envelope on top of the outer box. Remains ship at the sender's risk — use tracked service.

Royal Mail (UK) permits ashes shipments but limits the maximum weight to 50 grams per package — roughly one tablespoon. This is plenty for a jewelry sample, but not a full urn. Check Royal Mail's current service, packaging, and documentation requirements before posting; full remains require a licensed specialist courier.

Common Mistakes

Using a private carrier. Shipping cremated remains through UPS, FedEx, or another private carrier violates carrier contracts and risks package seizure.

Using the wrong USPS service tier. Priority Mail (not Express) looks similar at the counter but isn't approved for cremated remains and doesn't trigger the manual handling protocols.

Skipping the inner sift-proof container. Ashes in a zip bag alone, without a rigid inner container, can escape through the bag seal under pressure. A threaded vial inside a bag inside the BOX-CRE is the three-layer standard.

Forgetting the interior identification slip. If the outer label is damaged or detached during transit, the interior slip is the only way USPS can identify and route the package.

For the full shipping protocol and other logistics of working with cremation jewelry makers — plus your consumer rights when funeral homes get involved — the Memorial Jewelry & Keepsakes guide has step-by-step instructions.