Learn how to write an employee appreciation letter with these templates and examples. Download the template for free (PDF or Word).Thank you very much. Below you will find sample appreciation letters to send or email an individual or individuals who have helped you at work. Suggested topics include expressing gratitude for their service, sharing hopeful messages, well wishes, and positive thoughts. The message of appreciation should stand alone. Be brief, warm, and sincere. To my younger self, Hey there, You did a great job! Even if no one complimented, I will. 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.