Digital Marketing includes Email Marketing, Social-Media Marketing, SMS Marketing, Web Analytics, etc.,
For example:- Imagine you have 10,000 business contacts and you are sending an email campaign with some offer and in if there are about 500 clicks and 7000 opens, send separate emails automatically to those who have clicked and those who have opened. And set an automation work flow, for those who have opened the mail wait for 2 days and send them a specific mail or twitter message or facebook message or SMS, etc. Similarly you can use various work flows logically from other options like Add to List, Send a Team Notification, Remove from List, etc.,
From the above example, you may understand how it reduces your manual work and saves you lot of time to focus on other works for customer acquisition and handling business.