It would be useful if it were possible to set up a subscription preference type which is private or could be hidden from everyone.
For example this could be used for an internal employee newsletter who would have a subscription category that cannot be signed up for by external people. Or, if you have a specific group of customers who you want to sign up to a certain type of emails and therefore limit who would be able to access that subscription.
Hi all I am the product manager on the subscriptions team at HubSpot, I certainly see where this will be useful as folks run all their communications on HubSpot (external and internal) and the need to keep those completely separate. Right now we do not have a space for this in our roadmap, however I will keep this one on our radar.