A cover letter is a letter of self-introduction accompanied by a resume, which is also known as a curriculum vitae. The goal of a cover letter is to get a human-resources manager or other recruiter to take the applicant seriously and let the recruiter know why the applicant seeks the position. It should specify which position the applicant wants if it was advertised, or it should politely .
inquire if no position is available to the public.
As recruiters usually have far more applications than positions, good cover letters make applicants stand out in a positive way. If a cover letter is being sent as part of an email, it should not be sent as an attachment; it should be in the email body. This makes it easier for recruiters to judge the applicant without having to open more documents.