What do you need to include in your donation acknowledgment letter? What is required in a donation acknowledgement letter?The sample acknowledgement letters for receipt of payment provided below can be used as format templates for official and personal purposes. An acknowledgment is one of the most common types of notarial acts, but it often confuses Notaries. Here are 5 steps to performing an acknowledgment. In this video, you get answers to these questions: What is a receipt and release form? A donor acknowledgement letter should include a few specific items to assist the donor and help your organization comply with IRS regulations. A donation acknowledgment letter (sometimes called a donation receipt or thankyou letter) is an email or paper that recognizes a charitable contribution. The completed document includes the date, signer's name, location of acknowledgment, and the notary's signature. Employers may use the example notice or create their own.