To: [Insert name]
From: [Insert name]
Subject line: Rejecting Overqualified Candidates
Hi [Candidate name],
We enjoyed meeting with you to talk about the [job title] role. However, we have chosen to go forward with a different candidate for the position.
We were all impressed by your skills and attitude during the interview and definitely want to remain in contact and call you if a more fitting opportunity arises.
I am happy to answer your questions if you'd like any specific feedback about your application or interview.
Thanks again for your interest in [Company name] and best of luck along with your job search.
[Insert email signature]