An automation workflow is a sequence of steps triggered by a specific date, event or action triggered by the subscriber. You can use automation to send a series of emails automatically when your subscribers sign up or join a list. More about automation on here.

Combining Email Marketing with Other Types of Marketing
Whether you choose to do your marketing online or offline, one thing does not change. This is the concept that no single marketing strategy will be as effective as a combination of two or more marketing strategies.