To make a data extension sendable what must it contain. (Select Two)

A marketing manager wants to provide unique content to each customer in an upcoming email campaign.
Which three features could be used to create individualized content in the email? (Choose three.)

What is the timeline for which an unsubscribe request must be honored and processed as outlined by the CAN-SPAM Act?

Northern Trail Outfitters (NTO) wants to ensure a good user experience when subscribers read their emails.
What best practice should NTO employ?

Northern Trail Outfitters' marketing team includes the nearest store to customers in the template of its emails.
This data extension only needs to be updated when store information changes, such as when a new store opens or a store closes.
How could this be achieved?