You are subscribed to an "Automatic Thread Subscription" and the delivery method is set for instant Email notifications to the email address on file which is an account with msn.com. If you don't want to get the notificatns go into User CP and change the settings. It's your call.
If the email address is incorrect you can fix that in User CP too, You won't get the notifications if your address is wrong.
If you need assistance with any of these settings click on the 'Contact Us' tab and someone will be happy to give you a hand with it.
While your in your User CP you might want to adjust your time settings too, I noticed yours is still set to the default GMT Western Europe time.
'11 GMC Acadia SLT AWD
'11 GMC Sierra 1500 4x4 Extended Cab