A clean e-mail list is essential for effective e-mail marketing and fundraising campaigns for several reasons. First, if you’re sending out a terrific fundraising campaign, but 20 percent of your list is bouncing, you might hit an ISP’s ‘bounce threshold’ and end up on its blacklist. That increases your expenses, because you’re still paying for those e-mails to be deployed, and decreases your revenues, because a portion of your base isn’t aware that you’re seeking donations. Plus, it will take a lot of painful time and energy to get off the blacklist. Second, a clean e-mail list allows you to stay in compliance with