In the latest version of Hype, we've updated the Newsletters page to include separation of free newsletters from premium newsletters.
This will help in keeping the newsletters separate when creating Popups and Landing Pages.

In order to associate a premium newsletter with a product, you can navigate to the Product tab, select the product you wish to edit, scroll down to the Benefits section, and select which premium newsletter(s) you would like to include as a benefit to that product.
