Donation acknowledgment letters are more than just a donor tax receipt. There are certain items to include for tax 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. The sample acknowledgement letters for receipt of payment provided below can be used as format templates for official and personal purposes. Want to learn how to write and structure donor acknowledgment letters? Check out these tips and sample letters to make a greater impact. An acknowledgment copy will be returned to the filer, along with an acknowledgment letter, detailing what was indexed into the Filing Officer's indexing system. Get agitated and pull out a weapon. â–·CALIFORNIA. Paying or Receiving Child Support.