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.A donor acknowledgement letter should include a few specific items to assist the donor and help your organization comply with IRS regulations. Want to learn how to write and structure donor acknowledgment letters? Check out these tips and sample letters to make a greater impact. "Thank you for your contribution of (insert amount of cash donation) on Date. No goods or services were provided in exchange for this contribution. This article will help you write a thoughtful and engaging thank-you letters for your donors. Online giving, reunion pledges, matching gifts, and wire transfers are just a few of the ways we make it easy for you to support undergraduate life at Penn. For additional assistance in donating to an option not listed, please contact Donor Care at 1-800-RED CROSS, option 2 or fill out or online web form.