This letter should acknowledge the gift of stock, such as the name and number of shares. A gift of cash is the simplest and most convenient way of giving to the Foundation.Cash can be given in the form of currency, check, or money order. You can upload a logo, mission statement, and message that you would like to include on the acknowledgement letter. Your letter should acknowledge the gift of stock, including the ticker, the number of shares, and the date of the donation. Want to learn how to write and structure donor acknowledgment letters? Check out these tips and sample letters to make a greater impact. The donor must complete all parts of IRS. Form 8283 and submit the form to the Foundation for signature. The. A donation acknowledgment letter (sometimes called a donation receipt or thankyou letter) is an email or paper that recognizes a charitable contribution.