Direct answer: All three major U.S. carriers permit shipping hemp products that meet the federal 0.3% Delta-9 THC threshold, but each has its own additional requirements — USPS requires a self-certification statement for hemp shippers, while FedEx and UPS apply their own carrier-level cannabinoid policies on top of whatever the destination state allows.
USPS: Self-Certification Required
Following the 2018 Farm Bill, USPS updated its mailing standards to permit hemp-derived products containing no more than 0.3% Delta-9 THC, but shippers must complete a self-certification confirming compliance before mailing. This applies to CBD and other compliant hemp extracts moving through the mail.
FedEx and UPS: Carrier Policy on Top of Law
Private carriers aren't bound by USPS's specific self-certification process, but they maintain their own cannabinoid shipping policies, which can be more restrictive than federal law alone. Both carriers have taken enforcement action against shippers found to be moving non-compliant or intoxicating cannabinoid products.
The Part Everyone Forgets: Destination State Law
Even a shipment that's fully compliant with a carrier's own policy and federal law can still be illegal to receive in a state that bans the specific cannabinoid — Delta-8, THCA, or HHC bans apply to the recipient regardless of how compliant the shipping process was. Retailers shipping nationwide should check destination-state status before fulfilling, not just after a complaint.
FAQ
Do I need special paperwork to mail hemp products via USPS?
Yes — USPS requires shippers to complete a self-certification confirming the product meets the 0.3% Delta-9 THC hemp threshold before mailing.
Is it legal to ship Delta-8 to any state?
Not automatically. Even federally compliant Delta-8 can be illegal to ship into a state that has banned it — check the destination state's specific status, not just carrier and federal rules.
Which carrier has the strictest hemp shipping policy?
Policies change and vary by product category; retailers should review each carrier's current cannabinoid shipping policy directly rather than relying on federal compliance alone.