So, in this post, I'm breaking down how to write a donation letter. Reaching out to companies for food and raffle item donations?Use these donation request letter templates and donation request forms. Sometimes,l you may want to ask the public directly for donations. Pennsylvania Health Law Project. Learn how to write effective fundraising letters that inspire more support from donors. Explore best practices and templates in this comprehensive guide. Giving receipts is an important practice since 501(c)(3) donations are tax-deductible to the donor. Our sample form provides an easy way to get started. Check out some great ideas in this nonprofit donor gift guide.