Easier Said Than Done: Secrets for Maximizing Your Net Revenue
If you're mailing a full schedule to people whose last gifts were 12 or more months ago, I can almost guarantee you're wasting money.
● The best predictor of gift amount is previous gift amounts. Donors tend to keep their gift amounts at the same levels. The most common way donors increase their giving is by making more gifts of the same amount, not by making larger gifts.