Learn how to write an employee appreciation letter with these templates and examples. Download the template for free (PDF or Word).In this article, we explain what an appreciation letter is and how to write one with tips, examples and seven easy steps to write your own. The message of appreciation should stand alone. Be brief, warm, and sincere. Read on for five thank-you letter examples and templates, and a little more on gratitude. Using proper grammar, good sentence structure, and a clean resume format will demonstrate your professionalism and expertise. Interview and Application Tips. 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. Writing a proper appreciation letter to employees can be time consuming.