The purpose of a cover letter is to introduce you to a prospective employer and describe how your skills and abilities match the employer's needs. A good cover letter puts your résumé in context and persuades the prospective employer that you are a good match for the position in question.Include an introductory cover letter with each resume you send to employers. They are usually one page. Write your letter in a way that shows how you want to benefit the company instead of going on at length about how this job will fulfill your personal goals. In a letter of inquiry, ask about the possibility of an opening – don't assume the employer will contact you. Here are three great examples of cover letters that each demonstrate different ways of formatting and tailoring your content to fit your position of interest.