If I’ve sent you a link to this blog post, it’s probably because your .edu email address is not already associated with a Google account, and I got a notification about that when sharing a doc or calendar item with you. To fix this problem permanently, open a browser logged into a gmail account (create a new one if you don’t want to use your personal one), and go to:
From there, you can add email addresses that will actually work for receiving things like Google doc invitations and Google calendar invitations. This is somewhat new, and different from just setting up a “send mail as” setting in gmail, because it applies to all google services at once.
Give it a try, and save us both a bunch of future hassle 🙂