Learn how to write an employee appreciation letter with these templates and examples. Download the template for free (PDF or Word).In the first sentence, say you're grateful for the employee's amazing work. Specify what they've done recently to impress you. Fill out the form linked below and send to our office via e-mail, fax, or mail. We will then send the business a thank you letter and a certificate. This is one of the most important memos or letters you will write because it builds good will, respect, and cooperation. Here's a small samples of a appreciation letter done right. Guidelines for writing appreciation letters: State what you appreciate and briefly explain why. This guide covers all the essentials, from how to format your letter to what kind of content it might include.