Problem: Members editing email preferences being fooled into thinking they will receive a newsletter by turning on a subscription.
For example, the Supporter Edition is never going to send content to unpaid subscribers:
By being able to subscribe to this newsletter from their email preferences a Member would rightly believe they are going to be receiving content.
Replace the checkbox for paid newsletters the Member is not subscribed to with a join icon/link.
Add a join icon/link below the checkbox for paid newsletters the Member is not subscribed to.
Add a checkbox to the newsletter set up page - “Don’t show in email preferences for non-subscribers”
Add some explanatory text below the paid subscriptions like “By subscribing you will receive the free issues of this paid newsletter.” ( But that’s long and this panel is so well designed it may not work within it.)