If we go to Settings, we'll see this Notifications menu bar
If we go under 'Player' we'll see two lists: Active and Subscribed
Active list mean that these notifications are turned ON in the club and player will have the choice to receive them, or turn them off.
If these are turned OFF (unchecked, so NOT active), the players will not have an option to receive or not receive them.
See the example of the UNCHECKED box here. It is now no longer available to be 'subscribed' to.
The 'Subscribed' bar means that players WILL receive these emails by default until they go in and uncheck these on their personal accounts (personal Notification settings).