READ THIS NEXT: Never Mail This in a Letter, USPS Worker Warns. Some people incorrectly assume that they can send whatever they want through the mail without a second thought because it’s a crime to open someone else’s packages. The reality, however, is more complicated than that. For one thing, private companies like UPS include the “Right of Inspection” in their terms and conditions, meaning the company “reserves the right to open and inspect any package” a customer pays it to transport. “Your reasonable expectation of privacy is out of the hands of the government when you use third-party shipping options,” Carl Barkemeyer, a criminal defense attorney in Louisiana, explains on his website. Additionally, unlike the U.S. Postal Service (USPS), third-party couriers like UPS don’t have to obtain a warrant to search a package they feel is suspicious. There are “certain prohibited items UPS won’t ship due to laws or regulations,” according to the company. This includes the shipment of something that is still illegal federally: marijuana. Over the past few years, state laws surrounding the sale of marijuana have become much more lax in the U.S., leading to the legalization of recreational cannabis use in nearly 20 states, per CNET. But there is still a federal prohibition on cannabis, which means you can’t just buy marijuana products in a state where it’s legal and ship it elsewhere as you please. Under UPS guidelines, the shipment of marijuana is “prohibited under any circumstances, even when marijuana is for medicinal purposes or is otherwise legal under a state’s law,” the company says. RELATED: For more up-to-date information, sign up for our daily newsletter. If you somehow manage to get UPS to accept a package with marijuana products inside without them knowing, don’t assume you’re in the clear. The company warns that it “reserves the right to dispose of any shipment containing marijuana.” The only exception to this restriction is that UPS does accept products made from hemp—which includes CBD—for shipment, but only “as permitted by all applicable state and federal laws.” And UPS does not allow the shipment of hemp products coming from any location that also sells marijuana or marijuana products. So the company also “reserves the right” to throw away certain package containing hemp or hemp products.ae0fcc31ae342fd3a1346ebb1f342fcb Simply having your package thrown away by UPS for containing marijuana products could be the least of your worries, however. The company also has a prohibited item fee that you could get hit with. “If it comes to the attention of UPS that a package contains any prohibited article, you must pay to UPS an additional minimum administration fee of $150 in addition to any other applicable charges,” the company says on its website. You could even get banned from shipping anything with UPS ever again. The company warns that it “reserves the right to discontinue service to any shipper for, among other reasons, tendering a package containing marijuana, hemp or hemp products.”