I have noticed I don't get any e-mails from MakeUseOf and when I looked at it I found they were stopped on the server level "Sender verify failed" for a week or two. As I can't do anything on that level I wanted to change the address to one where I hope I can get the mails but I can't find any places to change it. Under Profile I just found "Add Social Connections" to be something I can change.
I did use this address for my Twitter account, the one I use to sign in here, but I have change it there. Then disconnected and connected Twitter again, logged in and logged out, but still - my "old" email.
(I can see it now - just under this box is "Notifications regarding your question will be sent to your registered email address xxxxx and all questions are checked before being published")