There are no exceptions to the rule. If you are sending out a resume, you have to include a short, but detailed cover letter. It needs to be treated with the same amount of thoughtfulness, as your resume. If you don’t follow this rule, you will be making a critical mistake!
There are three major types of cover letters. The application letter is a response to an advertized job posting. A prospecting letter inquires about possible positions and a networking notice will request information, and possibly, assistance in a job search.
It should be obvious that an effective cover letter will state the reasons why a job seeker is submitting a resume, the qualifications that are being offered, and an indication as to where he or she learned of the position. Also mentioned in this write-up is the job title, and an identification or reference number, if applicable.