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Advantages and Disadvantages of ;Direct mail ;Advantages;5, You have total control over the presentation of your advertising message. 6, Your ad campaign is hidden from your competitors until its too late for them to react ;Disadvantages;Telemarketing;Advantages;6, Its outsourcing外包 set-up cost is minimal 7, Increased efficiency since you can reach many more prospects by phone than you can with in-person sales calls. 8, Great tool to improve relationship and maintain contact with existing customers, as well as to introduce new products to them .9, Makes it easy to expand 扩大sales t