You'll need a USPS Web Tools account to integrate USPS rate lookup account with Cartloom's checkout process. Learn more and signup for a USPS Developer account at:
Test to enable test mode (non-production mode)
Your USPS Web Tools Username
Your USPS Web Tools Password
If your package sizes vary, choose Variable. If *all* your packages are shipped in a specific size or shape box, select that box from this menu.
A machinable parcel is any piece that is not a letter or a flat and that is
a.Not less than 6 inches long, 3 inches high, 1/4 inch thick, and 6 ounces inweight, except under 1.5.2. A mailpiece exactly 1/4 inch thick is subject to the 3 1/2-inch height minimum under 601.1.0.
b.Not more than 27 inches long, or 17 inches high, or 17 inches thick. Parcelscannot weigh more than 25 pounds, except Parcel Select and Parcel Return parcels which have a maximum weight of 35 pounds, except for those containing books or other printed matter (25 pound maximum).
You can optionally add a handling fee to the rate quoted by USPS. This amount is hidden from the buyer and is added to the rate returned by UPS. You can select to add a flat dollar amount or a percentage of total order amount.
Enable the list of services you wish to offer. Only options eligible for the buyer's address will be displayed to them at checkout.