An ecourse is an email series that goes out over the course of several days.
You may have signed up for a “Free 7 day course on How to Cook Healthy Foods for your Family” or “Five Days to a Well-Trained Dog”. If so, you signed up for an e-course. You received day 1 while other people may have been receiving day 3 or day 7. The emails are in sequence to be sent in order as people sign up, whether the person signs up today or next year.
How can an ecourse help you get traffic?