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. On this ______ day of ______, 20____, I certify that the (preceding) (following). Acknowledgement of Receipt of Addenda. 9. Acknowledgement of Receipt of Addenda. 8. List of Contribution. 9. This agreement, the lease, can either be oral or memorialized in writing. How do you fill out an acknowledgment letter? Then write a statement that the recipient has received the item from the sender.