Avoid the Trash Can: Strict USPS EDDM Sizing and Weight Requirements Explained
To qualify for USPS EDDM Retail, a mailpiece must be a commercial direct mail flat, weigh 3.3 ounces or less, be at least 0.007 inches thick, and meet at least one flat-size trigger: more than 10.5 inches long, more than 6.125 inches high, or more than 0.25 inches thick. It cannot exceed 15 inches long, […]