Learn how to write an employee appreciation letter with these templates and examples. Download the template for free (PDF or Word).I'd like to thank you for talking with me about the research- assistant position in your seismology lab. Dear (attendee name),. Congratulations on successfully completing the (training programme name). Need to send a thank you email but not sure how to word it professionally? Here's how to respond to any thank you email politely. Get our best tips and 6 example emails to help you succeed. Guidelines for writing appreciation letters: State what you appreciate and briefly explain why. Sample Thank You Note.