However, use your own envelope for packages weighing exactly 1 lb.USPS Flat Rate Envelopes are almost ALWAYS the cheapest option.We ran the numbers to find out exactly when you should use a Flat Rate box and when you should use your own packaging and ship via USPS Priority Mail weight-based or Cubic instead. Generally speaking, the USPS Flat Rate boxes are a great option for heavy items that are traveling long distances.
Which is Cheaper: Flat Rate or Priority Mail?
2023 USPS Priority Mail Flat Rate Shippo vs. Sign up for a free Shippo account, to see live discounted rates and print USPS labels for Flat Rate Boxes. On top of this, Shippo merchants get access to special pricing on Priority Mail Flate Rate services during peak season. What are the 2023 USPS Flat Rate Box Sizes and Prices?Īs you’ll see below, Shippo offers discounted shipping rates when compared to what you’d find at your local Post Office.