Dear …
RE: __(Name of Project)__
Thank you for your recent letter. We appreciate you taking the time to provide us with your feedback. Your comments are valuable to our company for two reasons: First, for making us aware of how our staff performed with the __(type of project)__ and, second, it serves as positive reinforcement to our staff as we pass your comments along to those specific employees.
I want to say that __(Name of Company-service provider)__ also did an excellent job in __(describe service they provided)__. The expertise and professionalism that __(your company/you/etc.)__ brought to the project is greatly appreciated. Well done.
Overall, I can say that we are pleased with the way the whole project progressed from start to finish. We’re fortunate to have a team of employees who were willing to put their best foot forward with this __(type of project)__ as well as we’re fortunate to have contracted with a knowledgeable and professional __(project manager/team of IT experts/etc.)__.
Thanks for a job well done. It was a pleasure to work with __(Name of Company/you and your team/etc.)__.
Regards,