I know that but when I write or paste it in url it just takes me back to buzzerbeater log in page.
And if I search it nothing as well.
It's an email address.
That means you need to type it into the "to:" field of the composition page of an e-mail platform (gmail, entourage, hotmail, whatever), type in a message in the body field and hit send. It is an e-mail address, not a URL.