Well, clarifying my post above: a valid, working email is required: the demo is quite forgiving here. But the real thing might still require a throwaway at a minimum. Then again, needing to give a working email AND create a password to open an account is still worse, so …
Well, the email adress is not verified (and that’s why most, if not all, users here are unverified). So, let’s say a valid email address is not required ;-)