As for emails, dude you can create a ton of emails, not really something they can trace to you if you actually tried to.
I strongly disagree. While disposable emails are certainly a way to get rid of having your real personal info sold everywhere around, a 3-letter agency would easily find out which emails are yours and which aren't. Emails are not anonymous at all, and I am more than sure that NSA or CIA do have access to most, if not all email server backends.
Not to mention that the isp's are virtually all without telling anyone, giving all their users traffic data to the spy agencies and nsa, and even it they were not, they have ways of tracking things I am sure, and no vpn or tor is going to stop them either, this is the nsa we are talking about. So just through what you do on the internet, if they really want to know something they can. I am also almost sure that microsoft gives backdoors to the nsa and others.