READ THIS NEXT: USPS Just Issued This “Uncomfortable” New Warning to All Customers. If you think you’ve got a junk mail problem, you’re hardly alone. According to research from the New York University School of Law, the average American household receives 848 individual pieces of unwanted mail each year, per the Nebraska Recycling Council. This is equal to about 1.5 trees yearly per each household and more than 100 million trees for all the U.S. households combined. That might not even be the worst part. According to the researchers, 44 percent of junk mail is thrown away unopened, and only about half of it is recycled. So every year, 5.6 million tons of catalogs and other direct mail advertisements end up in U.S. landfills. A free roll of stamps showing up in your mailbox might seem more like a gift than junk—but it’s one you shouldn’t accept. In early May, the Sioux City Police Department (SCPD) in Sioux City, Iowa, took to its Facebook page to alert residents about such a scenario, warning that they had received a report of a person who had gotten postage stamps delivered in the mail that they did not order. According to the SCPD, these stamps had been mailed from China and were counterfeit. “Be aware … the current price of a USPS stamp is 58 cents. If it seems too good to be true, it probably is,” the department warned in its post. “The best way to avoid being scammed is to purchase stamps directly from USPS.” RELATED: For more up-to-date information, sign up for our daily newsletter. At the beginning of the year, a spokesman for the U.S. Postal Inspection Service (USPIS), the agency’s law enforcement arm, told The Washington Times that the USPS and its inspectors are aware of counterfeit stamps being sold online and advertised as “discount postage” for customers. “The Postal Service does not sell stamps below the value listed on the stamp,” they said.ae0fcc31ae342fd3a1346ebb1f342fcb For example, scammers were recently advertising a “bargain” roll of postage stamps worth $58 for a discounted price of $39, according to The Washington Times. The spokesman also told the newspaper that advertisements for these fake stamps surged in December of last year, but a Feb. 2022 alert from postal inspectors indicates that this problem has only continued to get worse over time. “The number of counterfeit stamps being sold from online platforms has escalated. Scammers peddle fake stamps on social media marketplaces, e-commerce sites via third party vendors, and other websites,” the USPIS warns. “Counterfeit stamps are often sold in bulk quantities at a significant discount—anywhere from 20 to 50 percent of their face value. That’s a tell-tale sign they’re bogus.” While you might be tempted to capitalize on stamps you received for free—or at a low cost—even though they might be fake, it’s not worth the risk. Andrea Avery, an assistant inspector in charge at the USPIS, told AARP that if a postal employee detects a counterfeit stamp being used, your mail will be confiscated and then reported to the USPIS. “To ensure your trusted communication arrives at its destination without delay, the Postal Inspection Service wants you to be aware of—and avoid—phony postage,” the USPIS warns. According to the law enforcement arm, the most “frequently encountered counterfeit stamp” is the Flag Stamp. READ THIS NEXT: 5 Reasons Your Mail Isn’t Showing Up, USPS Warns.