Managing HubSpot Subscription Types for Data Privacy Compliance

Hey everyone, for those using HubSpot with data privacy turned on, how do you manage subscription types? Here’s my conundrum: let’s say someone submits a form but doesn’t tick the box to accept marketing comms. Even if they don’t tick it, I’d still want to mark them as a marketing contact and send them the auto-responder email (and maybe 1–2 marketing email follow-ups related to their enquiry) That means I’d need to add them to an email subscription type (because of 'data privacy' being on). Does this mean I need to create a dedicated subscription type just for auto-responders and enquiry-related marketing emails, and then a separate one for broader marketing comms (if they tick the box)? I’d prefer not to create a whole new subscription type just for form follow-ups, but maybe there’s no way around it. How have you handled this? Of course, I want to keep this fully GDPR compliant.