The contract between Amazon and the United States Postal Service has brought a wave of uncertainty for the retail giant. Here ...

If a deal with USPS falls through, it could dramatically shift how millions of Amazon packages move across the country.

Never again will the arrival of an Amazon order be a surprise. Now, waiting for your purchase can be tracked down the second with Amazon Map Tracking, which is available for deliveries of all U.S.

The e-commerce giant wants to reduce its postal volume by at least two-thirds by this fall.