Of the hundreds of resumes that employers get for every job opening, you need to stand out in order to get a callback, and there is just one way to do that; your cover letters. A resume might make you stand out from the crowd, but before your potential employer ever looks at your resume, they have to be wowed by your cover letter. Most employers do not open about half of the resumes they get for every job opening. They get tossed in the trash or deleted with a cursory glance or sometimes even no glance at all.