Do know what Email Marketing is? OK let me explain you, basically, email is used as a medium to promote newly launched products/services or offers related to products/services. But a better definition of email marketing is the use of email to build relationships with potential customers.
Email marketing is a part of internet marketing, which encompasses online marketing through websites, social media, blogs and many more. It is essentially the same as direct mail except that instead of sending mail through the postal service, messages are sent electronically via email.