I can not enable/disable the e-mail notification in my user data. Although I can choose the option, after submitting I get an "Updated" message. But if I'm clicking on another page and afterwards come back to my 'edit user profile' page, the option to get an 'e-mail notification' is the same. I can change everything of my profile except of the notification, is there a trick?
But maybe that's intentional - are you sure you want an email anytime someone makes a move in your games? I would get like 300-500 mails a day, and I would not want that....
Email notification seems to only notify you when you take a vacation day.
Personally, I _would_ like an email every time I have a move to make. Especially if I could submit my move by email. But that's because I started playing games by email ages ago.