Simple steps for how to write an employee appreciation letter to help your employees feel recognized, valued, and indispensable. I'm writing to express my thanks for your prompt and resourceful handling of my financial issues.Learn how to write an employee appreciation letter with these templates and examples. Download the template for free (PDF or Word). Begin your letter with a greeting that includes the customer's name. Make sure the customer's name is spelled correctly. A simple letter of appreciation to a great member of your staff for their efforts will help them feel encouraged and motivate them to keep putting in hard work. Be brief, warm, and sincere. Postcards may be used for short notes. Thankyou letters should begin with a statement thanking the vendor for their service.