A gift acknowledgment letter weaves together your nonprofit's appreciation, engagement, and compliance efforts following a donor's generosity. Include the nonprofit's EIN so the the donor can to check the charity's tax-exempt status with the IRS.Want to learn how to write and structure donor acknowledgment letters? Check out these tips and sample letters to make a greater impact. We will also provide nonprofit thank-you letter templates designed for various gift types to help you perfect your letters of appreciation. This guide offers tips for writing acknowledgement letters to families for donations made in memory of a loved one. Donors need to be appreciated too. If you want some guidance, check out our donor thank you letter templates for any organization! Thank you for your recent gift to the Parallel Laboratory in the Department of Electrical Engineering and Computer Science. As you know, this important.