Guidelines for writing appreciation letters: State what you appreciate and briefly explain why. Learn how to use an effective letter of appreciation to show your gratitude for job opportunities, job search referrals, and other kindnesses.Thank you for taking the time to meet with me at the Central Florida Career Fair today. 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. For a professional letter, use a more formal closing like "Sincerely" or "Respectfully. This article explores the value of sending gratitude messages and introduces guidance and templates for writing them. Learn how to write an employee appreciation letter with these templates and examples. Download the template for free (PDF or Word). , writing a gratitude letter or a gratitude list) and content (e.g. I hope this letter finds you well.