U.S. Postal Service Shipping Rate Increase Will Go Into Effect This Sunday

Sunday marks an important date for e-commerce marketers: USPS shipping rates are going up. The date may have seemed a long way off before the holiday rush, when package senders first learned Priority Mail fees would rise about 9.8 percent. After all, about 15 billion mail pieces and packages needed to be delivered by the new year. But the day of reckoning is here.