Debuting in Spring, Plenti Will Let Consumers Earn and Use Points across a Range of Well-Known Brands in Different Industries NEW YORK, 2015-3-19 — /EPR Retail News/ — AT&T, ExxonMobil, Macy's, Nationwide, Rite Aid, Direct Energy and Hulu are joining with American Express to launch Plenti, the first U.S.-based coalition loyalty program with well-known brands where…