Companies have long used email marketing to reach out to people to keep them informed and to remain connected with them. Traditionally, you would buy an email database and have an email server with the capability of high-volume email blasts to send out mailers to people in that database. Over time, these platforms/tools started building better capabilities, such as:
 The ability to capture leads from other sources
 The management of these leads
 Features such as WYSIWYG editors to ?create emails using templates
 Tracking and analytics
And this is where the overlap with marketing automation tools starts. However, marketing automation platforms go a step further and provide additional capabilities, such as:
 Automating email campaigns
 The ability to not just manage leads ?but also score, prioritize, and nurture them
 Moving beyond email campaigns to ?also include social and mobile campaigns
Of course, email marketing vendors will claim they also offer many of these features, and that's where the confusion starts. Hence, the key advice is to look deeply into what the tool or platform does rather than worrying about what it is called.

Food for thought. http://.com/sms-campaign-nigeria/