I wanted my class to submit a written gesture of gratitude to some instructors. Then I encountered a surprising hurdle.

Sending a thank-you email within 24 hours of an interview shows professionalism and reiterates your interest in the position. Customize your thank-you interview emails based on the person's title ...

See, throughout his tenure at the company, Conant sent more than 30,000 handwritten thank-you notes to staffers and clients. (In a 2011 Harvard Business Review article, Conant explained that he ...