Sending a small class update

<p>Hey everyone,</p>

<p>I applied to NEU early action. I take extra courses at community college, and I had listed that I was going to take two next semester. I decided to add another course, and my guess is that I should tell them this (especially since the class is related to my major). I was wondering if I should send in like a formal letter for such a small update, or would an email suffice? I know it’s kind of a nit-picky question but I’m not really sure what would look best in this case.</p>

<p>Thanks!</p>