You should avoid sending the exact same thank you note to each person who interviewed you because it can come across as insincere and impersonal. Personalizing each thank you note by referencing specific points from the individual conversations demonstrates genuine interest and respect for each interviewer's time. Sending identical notes may give the impression that you did not put thought or effort into your follow-up, which can weaken the positive impression you want to leave. It is best to send separate thank you emails or notes tailored slightly to each interviewer rather than a single group email, as this shows appreciation uniquely and meaningfully for each interaction. This approach helps maintain a professional image and can strengthen your overall candidacy in a competitive job search.