Northern Trail Outfitters (NTO) completed a data review process and discovered their data extension folders contain hundreds of filtered data extensions which are never used.
What tool could NTO use to alleviate the number of filtered audiences that are created for sending?

Northern Trail Outfitters wants to send a promotional offer every Friday morning between 9:00 and 11:00 a.m. The content of the will change on a weekly basis. The promotional email will be sent to subscribers in the Promotions Data Extension.
What send method should be used to minimize errors?

A marketer wants to use personalization strings to create individualized content for an upcoming send.
Which three items should the marketer know when using personalization strings? (Choose three.)

What is a purpose of marking an attribute as hidden?

Which type of data can a subscriber easily update via the Profile Center? (Choose 2)