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 offer some tips and examples to help you write a great thankyou letter to your manager. Below you will find sample appreciation letters to send or email an individual or individuals who have helped you at work. The message of appreciation should stand alone. Be brief, warm, and sincere. In this guide, we'll provide tips on how to write a thoughtful and effective thank you letter, along with some sample letters for inspiration. Big Goals Require Collective Action. Since I joined FranklinCovey in 2000, I've spoken with hundreds of leaders about their most important challenges. I just wanted to reach out and say thank you for everything that you have done for me.