Email and sms marketing play a importante role in promtions

Email marketing  help of sending a commercial message, to a certain group of people and customers who are intrested in that products, using emails. It involves using email to send advertisements, request business, or solicit sales or donations. 

The purpose of email marketing to enhancing a relationship with current or previous customers, and acquiring new customers or convincing customers to purchase something , and share with third-party ads.

SMS Marketing is another way to connecting with customers through mobiles sms,now days mobile marketing also done with the help of whatsapp, its broadest sense, every SMS sent to a potential or current customer could be considered SMS marketing