Learn how to write an employee appreciation letter with these templates and examples. Download the template for free (PDF or Word).To help you create a sincere thank you note, we detail a few guidelines that are imperative, yet easy to follow. The message of appreciation should stand alone. Be brief, warm, and sincere. List the professional service the organization is authorized to provide under Minnesota Statutes, Chapter 319B, subd 19. Customer: Hi, I'm writing a letter to the MN Dept. Of Revenue concerning a sales and use tax final appeal. Thankyou letters should begin with a statement thanking the vendor for their service. Submit your completed renewal form as quickly as possible to your county, tribal or state agency.