One of the least expensive shipping methods for USPS is shipping via First-Class Mail. Packages equal to or less than 15.999oz are eligible for this shipping method.
USPS accounts connected to ShippingEasy currently allow a maximum value of 15.99oz. As long as the package weighs less than 15.999oz, the USPS will accept the shipment at 15.99oz as having accurate postage.
If you have the correct weights for your SKUs on your store platform or are using our [Product Catalog] to assign weights to your SKUs (and total order weight), you can easily make this shipping selection automatic.