Email unsubscribe - how to add more finesse to the functionality ?

Hi all,

By default, when a recipient unsubscribes via email, the system updates the global “Do Not Email” flag. This effectively blocks all future marketing communications.

I’m looking to understand whether it’s possible to refine this behavior to support more granular subscription management based on email types or content themes.

Use case:
A contact may want to continue receiving event-related communications (e.g., invitations, updates) but opt out of product-related marketing emails. Currently, unsubscribing from one email type results in a full opt-out, which limits our ability to manage preferences more precisely.

Has anyone implemented a solution that allows for segmented or preference-based unsubscribe handling (e.g., by category, topic, or campaign type)?

Appreciate any insights or best practices.

Thank you,
Damien