Learn what an acknowledgement receipt is and how to create one for your business (with a template and two examples). Complete this section only if unable to secure signature of affected adjacent owner or representative.Proof of delivery (i.e. An ethics manual acknowledgement form for City officers and employees to sign upon receipt of the Board of Ethics manual. Discover the value of acknowledgment letters in confirming the receipt of deliveries. Use our free template to craft an effective, professional letter. Acknowledgement letter is a letter of receipt which confirms the reception of certain documents or products. The Applicant must complete and sign this Acknowledgement and Attestation Form. What do you need to include in your donation acknowledgment letter? Filing Requirements and Fees.