<p>I sent my professor an email yesterday because he gave me the wrong grade. I sent it yesterday .. I know he checks his email a lot. How long should I wait?</p>
<p>If you don’t hear by tomorrow I would call. It’s possible that he took a vacation after school is out. If this is the case then you might not hear from him until he is back, but at least you won’t wonder.
I wouldn’t call frequently or be a nuisance though, but one follow up call to see if he got your e mail is OK I would think.</p>