"This option makes your message board much more user friendly for mobile devices. Your message board will fit the width of a mobile device, resulting in less scrolling. However, a tradeoff is that your header and footer is not used when your message board is accessed from a mobile device, since we can't be sure that content will fit the width of the screen.
This is a recommended feature to enable on your message board."
It looks like the email box is now an option setting as well.
For some reason when I deselect it, it doesn't register and appears ticked again when I log back in. Weird. It might be that they've done an upgrade and things aren't working right?