2.Placing ads and promotions online
3.Creating or participating in online social networks
4.Using email
But E-mail growing occur the side effect. it’s called “spam”. According to one research company, spam now accounts for 90 percent of all e-mail sent. About these concerns, most legitimate marketers now practice permission-based e-mail marketing, sending e-mail pitches only to customers who “opt in.”
When used properly, e-mail can be the ultimate direct marketing medium. Blue-chip marketers such as Amazon.com, L.L.Bean, Office Depot... and others use it regularly, and with great success.
Given its targeting effectiveness and low costs, e-mail can be an outstanding marketing investment. According to the DMA, e-mail marketing produces a return on investment 40 to 50percent higher than other forms of direct-marketing media.

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