We cover just that in this blog! You can learn how to write a customer appreciation letter and get many samples below.In this article, we explain what an appreciation letter is and how to write one with tips, examples and seven easy steps to write your own. Here are tips on how to write a letter of appreciation, examples to review, and a template to download to get your own letter or email started. Get useful examples and templates, as well as tips on how to write and format thankyou letters, notes, and email messages. San Francisco, CA 94102. Dear Mr. Weatherby,. This guide will explain why you need to show customer appreciation, provide you with 44 thank you for your purchase templates, and offer useful advice. "Thank you for going above and beyond to provide great customer service. All of you are truly appreciated.