Learn how to write an employee appreciation letter with these templates and examples. Download the template for free (PDF or Word).The message of appreciation should stand alone. Be brief, warm, and sincere. Thank you from the deepest recesses of my heart and the epicenter of my soul- for all you have done for me and will continue to do for others. I want to let you know that we are exceedingly satisfied with your recent performance and your fantastic job on the < project name >. You will find three sample letters below, created for various purposes. We encourage you to personalize them with issues that are important to you.