A quick, heartfelt thank-you call can do more than express gratitude—it can dramatically boost donor retention and long-term giving. In fact, nonprofits that consistently call donors within 48 hours of a gift often see stronger loyalty, larger future gifts, and deeper emotional connections. This article explores why these five-minute phone chats are so effective, how to make them meaningful (not scripted), and how your organization can turn simple appreciation into a powerful fundraising strategy.