2.  It helps to build a courteous relationship  Having your letter keeps your name in front of the interviewer  Taking time to write a letter tells the interviewer of your continued interest and enthusiasm for the job

3.  Nearly 15 percent of hiring managers would reject a job candidate who neglected to send a thank-you letter after the interview  32% said they would still consider the thankless prospect but that their opinion of him or her would diminish  23% of managers prefer a handwritten thank-you  21% seek a typed hard copy  19% want an e-mailed thank-you followed up with a snailed letter  26% expect to receive the thank you within two days careerbuilder.com

4.  The letter allows you to reinforce key points you discussed during the interview  If you forgot to mention something important during the interview, you can put it in your follow-up letter  Be sure to use the interviewers name and state the position you interviewed for.