Learn how to write an employee appreciation letter with these templates and examples. Download the template for free (PDF or Word).This article explores the value of sending gratitude messages and introduces guidance and templates for writing them. Below you will find sample appreciation letters to send or email an individual or individuals who have helped you at work. Guidelines for writing appreciation letters: State what you appreciate and briefly explain why. "I want to express our heartfelt appreciation to the Music Performance Trust Fund for your support. We are very grateful for your generous gift… 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. Thank you for being you. Because of you, I have learned to see the good in people, and more importantly, to see the best within myself.