Ok here's one more place to check your email subscriptions.
Go to your START page , not your SPARK page; now under where it says Welcome Gold 11042 you will see Account/E-mail Prefrences - click on that. It will take you to a box with 3 tabs on the top that says; account, Email, Community.
click on the one that says Email. That will bring you to a screen that lists all the emails Spark People has to send, check the box for the ones you want to receive. Then go to the bottom and click on Save My Email Preferences.