The premise is that you choose the right box size according to your needs. Using a USPS Flat Rate Box can cut your shipping costs by 50%. If you are shipping heavy, small items, Flat Rate Boxes are the best bang-for-your-buck option. Flat rate pricing eliminates the need to weigh packages or calculate shipping fees, as long as the parcel weighs less than 70 lbs.

Priority Mail Flat Rate is a 1 to 3-day shipping service provided by the USPS that features one flat rate for delivery of a package or envelope to its destination. The lightweight American Express enjoys a considerable discount, and the express delivery fee is very cheap. The United States Postal Service has the largest civilian fleet globally and handles more than 16 billion letters worldwide each year. Each envelope is unique in size and structure and has differing use cases.USPS is an independent agency of the United States Federal Government. There are 5 different options for USPS Flat Rate Envelopes. That being said, let's dive into the different USPS Priority Mail Box and Envelope options. With a USPS Flat Rate Box or Envelope, you will be able to ship any item of any weight up to 70lbs to any location for the same price assuming it fits properly, without any bulging, within its designated box or envelope. If using non-customized boxes is not a deal breaker for you, USPS Flat Rate Shipping is a great tool to spend less on shipping. This can be a drawback for some because, unless you are a high volume shipper, you cannot get customized boxes with specific branding. In order to have access to the USPS Priority Mail Flat Rate pricing, you must use one of USPS designated Flat Rate Boxes you cannot use just any box of the same dimensions.

You can pick them up at any post office or USPS will actually ship the boxes opens in new tab open_in_new to you for free. One of the many benefits of shipping with USPS Flat Rate Boxes is that the boxes themselves are free. How You Can Use USPS Flat Rate Boxes and Envelopes to Save on Shipping

Dimensions for small flat rate box usps