How to submit recommendation letter to UC's and UT Austin?

<p>^^ This is not for honors program. I just want to do it as a freshmen recommended option.</p>

<p>So my teacher gave me a sealed envelope with a recommendation letter. But as the deadline is this Saturday for UT and tomorrow for UC. I was wondering if I can upload a scanned recommendation letter by unsealing the envelope. But I haven't submitted my essays as yet. And UT says that u aren't able to submit other items until they receive the application and this might take a few days. If I send through mail, it would take a long time to get there and I won't have a ride anyways to go to the post office. I am panicking! What should I do? Although it's only recommended, I really wanna send it to increase y chances. I am not in the top quarter of my school.
Help!
Thank you:)</p>

<p>UCs do not accept letters. I don’t know about UT though.</p>