A job applicant writes a post-interview, thank-you note to convey his appreciation for having the interview opportunity, reiterate his potential worth to the company and provide extra details that the applicant forgot to mention during the interview. A great thank-you letter increases the applicant's prospects of getting the job.
A thank-you note is a way for the applicant to follow up after a job interview. It reiterates the applicant's gratitude for the interview, interest in the position and acknowledgement of the remaining steps in the hiring process. The applicant should send a thank-you note despite having performed well during the interview because the hiring manager may consider the failure to follow up as a reason for turning down his application. While a handwritten or printed note is customary, an email message is acceptable.