What do you need to include in your donation acknowledgment letter? Acknowledgement letters are usually not written for routine donations of used materials.A donation acknowledgment letter (sometimes called a donation receipt or thankyou letter) is an email or paper that recognizes a charitable contribution. Honoree's Name is required. If you would like the family or a loved one to be notified of this gift please fill out the information below (optional). Donate. Make a Donation. Fill out my LGL Form! Donation acknowledgment letters are more than just a donor tax receipt. There are certain items to include for tax purposes. When acknowledging these donations, include the name of the donor, the number of shares, the name of the security, and the date when the transfer was completed.