I hope this sounds appropriate and not trite, but the reason I posted this thread is because there is a reason my scores are low - it was medical. I did my GRE after the application (ie. after I write my statement of purpose), so is there any value in sending an email to the prospective supervisor explaining my low GRE scores at this point.
Thank you.
I would probably stay silent until you receive a decision unless you feel that your whole application is hinging on the GRE scores, which doesn't seem likely in engineering. I had a medical problem one semester and had pretty bad grades to show for it. A professor of mine suggested I keep quiet because, while illegal, people will discriminate based on medical conditions. When I got denied to one of my top choices, I asked the adcom chair what I could do to make my application stronger next year. He responded that my grades were particularly low in some very important courses (during my bad semester). I explained myself while still being somewhat vague on the specific condition. A few weeks later, I received notice that they reversed their decision.