Despite a slow start to its same-day delivery program for e-commerce purchases, the U.S. Postal Service is in a strong position to challenge FedEx, UPS and other competitors in that potentially lucrative market.

USPS began testing same-day delivery, under the brand name of Metro Post, in San Francisco at the beginning of 2013. It promised delivery by 8 p.m. of packages tendered by 2 p.m. on that day. In December, it extended the pilot to New York City. Read more!