Learn how to write effective fundraising letters that inspire more support from donors. Explore best practices and templates in this comprehensive guide.What to include in donor acknowledgment letters? This contribution is strictly voluntary. Download relevant forms for donation. Donation receipts are important! Here's how to create donation receipts your donors (and the IRS) will love. Donor Doc Advance is a system where blood donors fill out their pre-donation health questionnaire electronically before donating that same day. • Put up a fundraising goal. Your support is greatly appreciated and making a gift is easy.