You can unsubscribe form notifications by clicking the unsubscribe link at the bottom of any notification email that you receive.
The option to start or stop notifications from any seller can be adjusted in your account by accessing any purchase you have made. Scroll down on the product access page in your JVZoo purchase account.
Find the checkbox that will allow you to receive new launch notifications from that seller.
Additionally at the bottom of any JVZoo page, you can also sign up for product releases as an affiliate.