We've been adjusting the email settings. There's now a new feature so you get an email if something you yay'ed actually entered the shop, and I think we'll be adding a couple of more notification options for artists to make it easier to find out what's going on.

In any case, if you get an email that you don't want to get in the future, simply follow the link in the bottom to turn it off. It's a bit difficult for us to get the settings exactly right for everybody. :)