B2E has provided the access to relevant United States Postal Service Web site links below.  Since postage is a big part of your direct mail campaigns, the USPS postage calculators will help during the budgeting process. Click to the right to calculate rates for all discount mail, including first-class mail, standard mail, periodicals, and package services. Click to the right for United States Postal Services postage rates – single piece mailings. Click to the right for mailing and shipping guidelines for businesses.