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Someone just sent me USPS First-Class Mail labeled up to 15.9 oz, in a Priority Mail box that's actually 4 lbs Bruhhhhh : r/USPS
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Solved: USPS First Class Mail goes up to 15.9 ounces, but ... - The eBay Community
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![USPS Shipping Rates by Weight Chart [2022 Full Guide] - PostScan Mail](https://www.postscanmail.com/wp-content/uploads/2022/09/USPS-Shipping-Rates-by-Weight-Chart.jpg "USPS Shipping Rates by Weight Chart [2022 Full Guide] - PostScan Mail")
USPS Shipping Rates by Weight Chart [2022 Full Guide] - PostScan Mail
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First-Class Mail & Postage | USPS
