Great questions! Based on the information I have available, here's what I can share:

1. Viewing unsubscribes via API or UI: There was a feature request to add an unsubscribe status column to the people export, and the team noted they would look into it. I don't have confirmation that this has been built out yet. There's no clear documentation I can point to about viewing unsubscribe status through the API or on an individual person's profile.

2. Resubscribing: I don't have reliable information on whether a contact can resubscribe once they've unsubscribed.

For both of these, I'd recommend reaching out to the support team directly so they can give you a definitive answer based on the current state of the platform. You can post here or email the team for the quickest response!