Just make up an email address or use your old defunct one. Worked for me. As long as the end is right (for example umn.edu) it doesn't matter what is before it because it will email your confirmation to whatever other accounts you have set up as well.
That didn't work for me, and I actually tried to contact the school to find my old email account.(I don't know why I'm bothering, either.)
This is re-opening old rifts between my album otter and me. They screwed me over from the first day (not accepting 9 transfer credits they later admitted they should have) to the last day (not having my name in the graduation program, not knowing I was supposed to graduate until I showed up in my gown).
Fuck George Mason. I got your Virginia Declaration of Rights right here.