In this post, I'm breaking down how to write a donation letter. This document provides a sample format for a letter acknowledging an in-kind contribution or donation.Try our free donation request letter templates! Download our standard template or check out our example letters for events, auctions, schools, and more. Let's walk through common examples of donation letters, starting with a template of the basic format to follow. Looking for donation forms for your charity? Grab attention with our customizable donation forms that can easily be shared online. 1. Print the template on letterhead. Sample Church Donation Request Letter Free Sample Letters. There are numerous tools in a variety of formats which include books, eBooks, audiobooks, and DVDs.