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. I am writing to express my deepest gratitude for your generous financial support.Your financial aid has relieved a significant burden off my shoulders. Thank you very much. Learn how to write an employee appreciation letter with these templates and examples. Download the template for free (PDF or Word). Guidelines for writing appreciation letters: State what you appreciate and briefly explain why. We are writing to express our deep gratitude for your recent financial donation to (Name of Organization). We've broken down the process to make it easy. Follow the steps we outline below to craft your own thank you letter for church financial support.