Write an excellent thank you letter for donations. Get tips and best practices, plus three inspiring samples and ready to use templates!13 Top Secrets of Donor Thank You Letters. Secret tip one: Consider adding a personalized handwritten note in the right-hand top margin. Donors need to be appreciated too. If you want some guidance, check out our donor thank you letter templates for any organization! Get your guide to writing donation thankyou letters supporters will remember and more thoughtful ideas to show appreciation. Do your thank-you letters for donations truly convey gratitude? Each thank you letter should be personalized with the individual or corporate donor's name, the amount of the donation, and other pertinent information. Thank you for your donation!