MAIL-IN DONATION FORM. A simple donation letter sample can start with, "You've been a big part of our organization's fabric over the years.Our kit includes two sample letters that you can easily customize. This document provides a sample format for a letter acknowledging an in-kind contribution or donation. Online donations are a secure, fast, and convenient way for you to donate with a credit card. Try our free donation request letter templates! Download our standard template or check out our example letters for events, auctions, schools, and more. In order for your contribution to be matched, please complete this form. Please make a copy of this form for your records. GENERAL INFORMATION: Property owners applying for a residence homestead exemption file this form and supporting documentation with the appraisal district in.