After completing a full day of interviews, a common question I receive from my candidates is whether they should send a thank you note to each of their interviewers.
First and most important, make sure that there are no typographical or grammatical errors in your thank you note. If necessary, have someone else (like your recruiter) read your thank you note to make sure that it does not contain any embarrassing mistakes. This is your last impression with an interviewer, and you want to make sure that you do make the most of it. For example, one of my colleague's candidates met with two different firms on the same day, and was in a rush to send out his thank you notes when he got home that evening. Thus, he typed out a simple, generic note and ''cut and paste'' the same thank you note to each interviewer. Unfortunately, he forgot to change the name of the firm. Needless to say, this made a bad impression on the firm and the candidate did not get the job offer. It is impossible to say whether this one mistake was the reason for the firm's decision, but it certainly did not help.