Pennsylvania strongly supports organ and tissue donation because of its life-saving and life-enhancing opportunities. A donation agreement is always necessary when the donor will impose, and donee will accept, certain conditions or continuing obligations pertaining to the gift.Enclosed is a donor envelope, for your convenience. We hope that you will help support our efforts. A simple donation letter sample can start with, "You've been a big part of our organization's fabric over the years. Use this online template to add donations through your website. Online Donation Solicitation Template. Use this gift agreement template as a starting point to spell out and document what your donor expects and what your nonprofit is committed to providing. The first thing that your donors look for is a personalized salutation, so begin your letters with a pleasant greeting and include your recipient's name. Donors simply complete the donation form provided below.