Guidelines for writing appreciation letters: State what you appreciate and briefly explain why. Learn how to write an employee appreciation letter with these templates and examples.Download the template for free (PDF or Word). I can't thank you enough for not only your teamwork and support, but for your vote of confidence; you really helped me overcome the issue. This article explores the value of sending gratitude messages and introduces guidance and templates for writing them. Use one of the sample letters provided here to get started writing a letter that conveys just how much you appreciate someone's actions. 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. In this article, we'll share thirty unique and creative ways to express your gratitude and show your appreciation for the people who support you. As an employee with 10 years of service, you will be recognized at the June 15 Employee Appreciation Gala. No need to overthink your messagethe most important thing is to make sure you say "thank you" in the letter.