After a job interview, it is proper business etiquette to send a thank-you note to the person who interviewed you. Thank-you notes are the best way to reaffirm your interest in the position. However, even if you decided the position wasn’t for you, you should still take the time to extend this courtesy to the interviewer.

Send a thank-you letter promptly, within 24 hours of your meeting. Begin your letter by thanking the interviewer for taking the time to meet with you. Be sure to mention the position name again and re-state your interest in the job and the company.

If there is any important information that you forgot to mention in the interview, a thank-you note is an excellent opportunity to add just a bit more information about yourself. Based on what you learned in the interview, you may want to emphasize certain aspects of your background. Resist the temptation to recap everything. You should keep the letter short – no more than a page in total.

Be sure your thank-you letter uses proper grammar and professional language. If you are sending your thank-you letter via e-mail (as most people do these days), paste the text into a word processing program to double check your spelling before you send it to a prospective employer.

Don’t forget to include your contact information again, and if you agreed to anything in the interview (such as a follow-up meeting), be sure to mention it.

If you interviewed with more than one person (a recruiter, your potential boss, a co-worker), send an individual note to each person.