Professor's e-mail spam box

<p>Does anyone know what kind of emails get sorted into the spam box for the professors? I ask this because none of my friend were able to contact their professor via email after the quarter had ended. At first I thought it was maybe just the professor. However, I sent my professor an email after the spring quarter had ended and I haven't gotten a reply yet even though she is the type of professor that would reply to your email within a couple of hours. I recall her mentioning that any e-mail that doesn't end with ucsd.edu would be sent to her spam box. Does anyone know if this also extends to emails that aren't enrolled in her courses also? </p>

<p>This question might be hard to answer because you guys aren't professors, but maybe you heard something.</p>

<p>Just call her. Or use your ucsd.edu email address.</p>