However, some surveys suggest that hiring managers like hand written thank notes, too. So, consider the "personality" of the organization and the rapport you felt during your interviews. If your interview was a fairly informal process and/or you achieved an immediate rapport with your interviewer, a handwritten note is fine. When you're not sure what to write, review thank you letter samples and follow up letter samples to get ideas. You can also use a thank you letter template as a guide when writing your letters.
In addition to thanking the person you talked with, the thank you letter reinforces the fact that you want the job. Note: Even if you do not want the job, write a thank you letter respectfully withdrawing your application, because you never know what the future holds so why burn your bridges?
View Your Thank You Letters as Sales Letters
You may also view your thank you letters as follow-up "sales" letters. In other words, you can restate why you want the job, what your qualifications are, how you might make significant contributions, and so on. This thank you letter is also the perfect opportunity to discuss anything of importance that your interviewer neglected to ask or that you neglected to answer as thoroughly, or as well, as you would have liked.
Group Thank You Letters
What if you spent an entire day being interviewed (and taken to lunch) with several people? Are individual thank you notes appropriate or should you write a "group" letter? Choose your approach based on what you think will be most in keeping with the "personality" of the organization. Also, consider whether the interviews had very much in common with one another. If there was a great deal of similarity (i.e., shared concerns mutually voiced by your interviewers), perhaps a "group" letter will suffice. My preference though, would be to take the extra time and send an individual thank you letter to everyone you met with.