The e-mails should be accessible but protected so Web Spiders and others can't get to them.

I accepted a challenge from a guy. I deleted the challenge confirmation. He was allies and I assumed I'd get a turn soon. He didn't send it. He said he'd never received the gamestart notice. This is the second time that's happened. That might be a bug. So it was a labor to find his e-mail again. I ended up having to send a challenge to him which I quickly cancelled to get his e-mail.