What do you need to include in your donation acknowledgment letter? Nonprofits can draft donor acknowledgment letters in whatever manner and frequency that they please.The administrator should provide the donor with an official acknowledgement of the donation (Attachment B sample letter). A donation acknowledgment letter (sometimes called a donation receipt or thankyou letter) is an email or paper that recognizes a charitable contribution. We've created a donor acknowledgment letter template to make it easy for you to automate personalized letters to your donors. Thank you so much for your most generous year-end gift to the College of. Letters and Science Humanities Division through the Schwab Fund for Charitable. If you wish to receive a letter of acknowledgment for your donation, please take a moment to complete the form below.