Here are four easy tips to help you create an effective event sponsorship acknowledgment template. You can begin the letter in a friendly and welcoming manner.This is a template that fiscal sponsors may use to write the statement. Knowing how to write an in-kind donation letter for your nonprofit means understanding the do's and don'ts. Let's check them out! Looking to secure sponsorships for your organization? Download these sponsorship letter templates to help you write a successful sponsorship letter! Learn about the importance of preparing and distributing acknowledgement letters on a timely basis to donors at tax time - Warady Davis - Chicago CPA.