Easier Said Than Done: Secrets for Maximizing Your Net Revenue
A more paranoid way to look at it: While you are letting your donors "rest," someone else is talking to them, asking for gifts — and possibly getting them!
The fundraiser/donor relationship is like any other human relationship: Communication builds it; lack of contact can strangle it.
I'm not going to suggest you create a snowstorm of direct mail. That would be financially irresponsible. And annoying. There are much more refined ways to increase meaningful contact with donors. Like these: