<p>How does my research mentor submit the rec? Should it be via email or mailed to the UG office?</p>
<p>A response would be appreciated asap.</p>
<p>Use this as an opportunity to get in touch with your particular admissions counselor directly. Let them know you are applying, you’d like to send an additional recommendation and ask how he/she prefers to have it delivered. [Contact</a> Us - Caltech Caltech Undergraduate Admissions](<a href=“http://admissions.caltech.edu/contact]Contact”>http://admissions.caltech.edu/contact)</p>