If your business or institution sends out large volumes of mail, it’s there. No matter how good your customer relationship management (CRM) system is, everyone has it. In many cases, it’s hidden from “the bosses,” stashed in a closet, or tucked under desks, cabinets, and tables. Sometimes, it may even be filed in the blue dumpster behind the building or recycled. To what am I referring? Trays and tubs of returned mail, of course.…