The U.S. Postal Service on Tuesday opened a website where retailers and logistics providers can begin bidding for last-mile delivery service to homes and businesses, part of a broader strategy by new Postmaster General David Steiner to raise revenue for the money-losing organization. The Postal Service has sold delivery service direct from post offices for many years, but it has been mostly limited to very large customers that bring bulk shipments to local or regional stations themselves. Under Steiner’s ...