The message of appreciation should stand alone. Be brief, warm, and sincere.I want to convey my heartfelt gratitude to all the members of the foundation who work tirelessly to make the world a better place for individuals like me. Discover 30 creative ways to say "thank you for your support" in this article. Strengthen your relationships and spread gratitude with these unique ideas. Writing a Financial Support Letter for Family Member with. Letter of Support. Cochrane. Letters of appreciation from scholars encourage our donors to continue funding deserving students like you. Finally, we may be able to consider your outstanding medical bills to qualify you for financial assistance. Along the same lines as authenticity, it is important to be specific in your thank you letter for church financial support.