
As you sell the first of each unique item, save the shipping settings. When your business deals in repeat sales of certain merchandise, many shipping programs allow you to preset mailing options to streamline postage printing. Larger or thicker mail pieces, such as softcover books, ship as first class parcels, while heavier items move up to parcel post, also known as retail ground, or Priority Mail class. A flat must also meet minimum size requirements of 6 1/8 inches long by 11 1/2 inches wide. An envelope up to 12 inches tall by 15 inches wide and three-quarter inches thick can ship as a first class mail "flat" if it weighs 13 ounces or less.



As you prepare shipments, the weight, size and thickness determines the type of postage you need to buy. Bubble mailers accommodate a range of merchandise.
