I am writing to express my deepest gratitude for your generous financial support. Your financial aid has relieved a significant burden off my shoulders.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. 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. In this article, we offer some tips and examples to help you write a great thankyou letter to your manager. A successful appreciation email has specific sections. Applications are kept confidential. I am writing this letter to personally thank you for the donation you recently made to the United Efforts organization.