Sending out materials by deadline

<p>For Cornell the postmarked deadline is Jan 2nd.(btw the materials need to be sent to the aap department so the deadline has to be kept even though they are supporting materials)Do you guys think that if I send it on Dec 31 will the portfolio and interview stamped by the deadline even when the post office will be closed on jan 1st? I would like to send it sooner but I am not quite ready yet so having few more days to work on them is very necesdary...Please anyone who have had dealt with this postmarked deadline issue help!!!!</p>

<p>Sent from my SGH-T989 using CC</p>

<p>If you are able to mail it at the post office before the delivery cut-off time on the 31st, they will be post-marked for the 31st.</p>