This chapter will aim at discussing the function of recommendation systems and its added values in the context of personal marketing communications with special focus on sales promotion in the current society especially when it comes to use of AI in recommendation systems. Starting with the introduction of recommendation systems and the theory it work on, the chapter will proceed to the development of AI in the sphere of marketing and the methods applied to the procedure of individualized marketing. It also looks into several real-life uses spanning different industries and describes essential issues, including ethics and privacy in marketing aided by artificial intelligence. Through intensive literature review and case analysis, the chapter will talk more about successful implementation and other trends likely to happen in future. Different perspectives of this chapter are going to focus on AI Recommendation Systems as one of the most important tools that influence sales, customers' satisfaction and brand loyalty in the future of marketing strategies.