Deliv, the startup which hopes to provide same-day delivery with the help of a peer-to-peer network of shoppers and delivery people, has raised another $4.5 million. The funding comes from a number of strategic investors, including mall operators Simon Property Group, General Growth Properties, Macerich, and Westfield, as well as existing investors Upfront Ventures, RPM Ventures and others. It follows $7.85 million already raised by the company.