Can I ask why the "Wheel of Fortune" feature was implemented via email only and not a built-in feature on one of the drop down menus on Freebitcoi.in? Is it in any way possible to link that feature to your account to enable that for users that get that?
The link in the email just take you to that Url that runs the wheel.... so why not just put that option on the drop down menu for the people that qualify for this?
I created a separate web mail account just for services like Freebitco.in and it is not my main email account, so I have to login to that account.. just to run that Url... (I did this to reduce spam on my main email account that I use for friend/family and work)

Well, it's simple marketing. It's way how to encourage users to subscribe Freebitco.in newsletter. Then users see all this promotional stuff sent by Freebitco.in. And this thing works - if not Wheel of Fortune, now way that I would subscribe their newsletter.