Filling out the form is easy. An employee appreciation or thank you letter is a formal message from an employer that recognizes the former's contribution to the company they work for.Operation Gratitude sends thousands of handwritten letters of appreciation, love and support to military and frontline responders. 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. We're proud to be one small part of the Harmony Public School family, and are excited that you're expressing an interest in what we have to offer. Someone came into our neighborhood today and put up a letter on our door that they will be out tomorrow to paint our address on our curb. Finding responsible individuals to fill leadership positions in your company is no walk in the park. San Antonio, TX 78238-5166. Request a Ceremonial Item. This is a contract location (third party post office in a shopping center) at 13428 San Pedro Ave.