A gift acknowledgment letter weaves together your nonprofit's appreciation, engagement, and compliance efforts following a donor's generosity. What do you need to include in your donation acknowledgment letter?Nonprofits can draft donor acknowledgment letters in whatever manner and frequency that they please. Thank you for your recent gift to the Parallel Laboratory in the Department of Electrical Engineering and Computer Science. As you know, this important. Donation thank you letter template: Learn how to craft heartfelt thank you notes and enhance donor engagement with LettrLabs. A donor acknowledgement letter should include a few specific items to assist the donor and help your organization comply with IRS regulations. County of Los Angeles (1968) 260 Cal.App. Inkind donations allow nonprofits to access goods and services that they may not be able to afford to purchase. There is no official IRS form that the exempt organization has to complete.