Lost: Donor Service. Reward If Found

Assuming a donor gives $25, you may spend almost that much following up with her over the next year or two. Spending a dollar today to mail a gratitude-laden receipt for that $25 gift, gently encouraging another gift, may help those future mailings receive better receptions.

Give them what they want — and maybe they'll give you what you want
When a donor calls with a request, take the time to help him. If you don't know the answer, tell him you will find it out — and then do so.