If you would like to reply to a commendation letter, here is a sample commendation letter reply.
To,
[Recipient’s name]
Dear [Name],
We are extremely grateful for receiving an acknowledgment of our employee [Name]’s efforts. [His/her] proficiency and diligence are highly remarkable and he/she is an important asset to our firm.
Thank you for taking the time out to commend his/her performance, we will let him/her know of your kind remarks.
Sincerely,
[Your name]