Netting High-Dollar Donors

4) Follow up. Don't just send out high-dollar mailings once a year. Including these prospects or donors in standard annual renewal or traditional appeals is a mistake. In his book, Warwick writes, "Functionally, high-dollar mail needs to serve as a communications platform to upgrade the most promising candidates from your small-donor program to a level of giving that's high enough to warrant attention from major gifts staff and volunteers."