<p>All colleges, including Harvard, purchase mailing lists from the College Board. Harvard literally send tens of thousands of letters and applications out every year, so yes it’s run-of-the-mill and it does not indicate interest. </p>
<p>The below article does not say how many mailings Harvard sends out, but notes that Yale cut it’s mailings down to 80,000 in 2005. I would imagine that Harvard sends at least that many out. [Ivy</a> League Colleges Solicit Students Rejected for Stake of Selectivity - Bloomberg](<a href=“Bloomberg - Are you a robot?”>Bloomberg - Are you a robot?)</p>