It is expected that a thank-you email or letter will be sent within 24 hours of each job interview or informational interview.  You can email the notes or handwrite them; either way the format should always be professional. In your note, express your appreciation for their time and consideration, and, above all, keep your letter brief. 

Outline:

First Paragraph

• Thank the employer for the opportunity to interview and reiterate your interest in the position at this time. 
• When sending multiple thank you notes to people at the same company, try to personalize each note by saying something like “I enjoyed speaking with you about…” 

Second Paragraph

• Mention any relevant skills or qualifications you forgot to emphasize during the interview
• Highlight the important points you made about your qualifications and interests.

Third Paragraph

• Close the letter by thanking your contact again and refer to any next steps you and the interviewer discussed.
• If you really want the job, say so at this point.