What do you need to include in your donation acknowledgment letter? This letter should acknowledge the gift of stock, such as the name and number of shares.A donation acknowledgment letter (sometimes called a donation receipt or thankyou letter) is an email or paper that recognizes a charitable contribution. Fill out our Online Stock Gift Notification Form. 2. Complete the Electronic Transfer Authorization Form (PDF) and provide it to your broker. Your letter should acknowledge the gift of stock, including the ticker, the number of shares, and the date of the donation. To donate mutual funds, bonds, and stock securities, please select your state of residence and contact the respective individual.