What do you need to include in your donation acknowledgment letter? The taking of an acknowledgment consists of positively identifying the signer of a document.Learn what an acknowledgement receipt is and how to create one for your business (with a template and two examples). 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. The sample acknowledgement letters for receipt of payment provided below can be used as format templates for official and personal purposes. The most common form you will use as a notary is the certificate of acknowledgment. Although the law does give certain wording for the. Sample Donor Acknowledgement Letter for Cash Donation. This document provides guidelines for writing an acknowledgement letter.