The cover letter is a small part of the job search process in the grand scheme of things, and it always seems to cause confusion for candidates, like how to formulate it and when to send it. Many positions are now applied to online, so traditional cover letter etiquette seems to be up in the air.
A good rule of thumb to keep in mind when responding to a job position via email is take out the important parts of the cover letter and integrate them into the body of the email instead of separately attaching the letter itself. Think of it this way; if you were an HR manager and had to sift through hundreds of candidate emails, would you want to take the extra step to download and view extra documents? Streamlining your email’s accessibility by highlighting the important parts of your cover letter in your email allows for a concise but lasting impression that will give HR all the information they need without the hassle.