Northern Trail Outfitters' wants to use a partner to develop dynamic emails. After submittal, the marketing team wants to makesure the emails are reviewed before approval.
What feature should they employ?

Northern Trail Outfitters uses HTML emails that haveheaders and footers coded into the email.
What tool can the marketer use to control default headers and footers on email sends?

Which method of storing subscriberinformation allows a marketer to easily create different subscriptions that subscribers can opt into from the default Subscription Center?

Which method of storing subscriber information allows a company to do extensive external audience segmentation including additional1:1 subscriber data the company wants for a send, and to import the data quickly?

Northern Trail Outfitters stores all customer information in a data extension and would like to know how many people are subscribed to a particular newsletter.
Which feature would provide this information?