A good donor acknowledgment letter is both a transaction record and a donor engagement opportunity. Here's how to write one.What do you need to include in your donation acknowledgment letter? A gift acknowledgment letter weaves together your nonprofit's appreciation, engagement, and compliance efforts following a donor's generosity. We've compiled common types of donation requests, plus carefully crafted templates that your team can use to jumpstart your outreach. Acknowledgment of "no goods or services were provided as part of this donation. Get your guide to writing donation thankyou letters supporters will remember and more thoughtful ideas to show appreciation. When Seeking Support for Your Organization or Charity, an In-kind Donation Letter Is an Effective Way to Get Donors. This Guide Shows How to Write It. Imagine this: a donor gives to your nonprofit after seeing the lifechanging stories your org has shared.