Developing an effective e-mail prospecting program, especially amid today’s heightened sensitivity to spam, can be a tough proposition, even for the most experienced direct marketing expert. To be sure, the raw numbers needed to justify large-scale, opt-in e-mail testing just haven’t been that great. In fact, some catalogers have given up on e-mail prospecting. But there are some trends in e-mail marketing that could make the sales channel more productive for mainstream catalogers. First, a quick background of the e-mail list industry: At the height of the e-mail craze three years ago, there were many compiled and category-driven lists (i.e., consumers