Well, that's a start.
I have a better solution for you though:
Unsubscribe from the Newsletter, and if one makes it through, tag it as Spam in your email filter so it and any future ones get sent straight to a spam folder where it can be deleted without ever being seen.
Then, either buy anything you might want or need from DAZ, or make  it on your own. You generally get better quality that way anyway.
This is what I do, and it works. ;)