Thank you very much. I want to thank you for allowing me to be part of your career journey and appreciating my help and knowledge.Two things: be honest and be specific. Both things help you avoid sounding like you're just sucking up for the sake of getting on the boss's good side. Learn what an employee recognition letter is and how to create one using the provided template and example. To request a certificate, please complete and submit the attached form below. All requests must be submitted at least four (4) weeks prior to the date needed. Thankyou letters should begin with a statement thanking the vendor for their service. The message of appreciation should stand alone. Be brief, warm, and sincere.