Hello @CarlS829 ,
At this time we don't have any official integrations with Zoom to capture peoples' attendance or anything like that. You could always check out the integration Marketplace, to see if there are any 3rd party options that can accomplish a similar task.
Otherwise if you're wanting to capture the people who click on your Zoom link in your email, you can go into the email's reporting to make a new list from the Click report.
If you're doing this through an online-type Event in our system, then you can have people who sign up opt into your mailings by turning on the option while creating / editing it. You can also upload the list of registrants as a contact list.