<p>I ask because I just noticed that on my application I forgot to put my apartment number. Do the UC's primarily use email for correspondence or do they send some important things in the mail?</p>
<p>I know this doesn’t quite answer your question, but when I lived in an apartment if someone forgot to write my #, the mailman gave it to my apt. manager and she would give it to me. Don’t stress :)</p>
<p>They do send important stuff in the mail (like acceptance letters, financial aid award letters, etc.), but nothing that you can’t also get online. The only college that I remember sending something really important was UCSC. They sent your online login info in the mail and they also sent a note about a scholarship that I received in the mail.</p>