Learn more about how to write meaningful acknowledgement letters to families for donations made in memory of their loved ones with this comprehensive guide. Upon receipt of the Material Donation Form and associated funds, the donor will be mailed an acknowledgement letter.IMPORTANT: Please also fill out this form if you are donating online and would like us to send an acknowledgement to family or friends. Donation acknowledgment letters help communicate appreciation while giving donors necessary tax information. Pay tribute to a loved one with a gift in honor or in memory of them while helping others in need. Pay tribute to loved ones or make memorial donations. Make a donation in someone's name and Komen will mail a tribute card to them about the donation. This document provides detailed information on how to complete the Foundation Donation Form.