Strictly speaking the login email address doesn't even need to exist, you'll just have to remember what you chose to create as your login name. Just make sure you choose a contact email address that does exist and you have access to.
Personally I wrote my email wrong when I created one and I had to recover the account the second time I wanted to log in to it XD
You could create an account called
or whatever, just follow the format for an email address.