Try our free donation request letter templates! Download our standard template or check out our example letters for events, auctions, schools, and more.In this post, I'm breaking down how to write a donation letter. The County Board of Supervisors accepts donations and gifts offered to the County for the use, benefit and advantage of the citizens of San Bernardino County. Let's walk through common examples of donation letters, starting with a template of the basic format to follow. This document provides a sample format for a letter acknowledging an in-kind contribution or donation. This is the simplest online donation form template that you can use without any code requirement and accept donations in the easiest way.