Historically, direct marketing is one of the oldest marketing methods based on direct contact with potential customers. The roots of the direct marketing approach go back a long way, from merchants who traveled the world and traded goods, to the development of various forms of direct selling in the pre-industrial age. The development of the direct marketing approach especially grew in the period from 1910 to 1920, when many American companies began to create their first customer databases and use mail as the main means of communication with them. The method of direct marketing approach is considered one of the most advanced in the world, especially for beginners, and is still used today as an integral part of advertising multimedia campaigns. Another aspect that we will analyze in this document is the impact of technology on direct marketing. Understanding the changes in the market and technology world is essential to successfully adapt the direct marketing approach. New trends, such as automation, the use of telemarketing and machine learning artificial intelligence to enhance the effectiveness and personalization of campaigns, and the use of social media to reach the target group, are just some of the things to consider. We will also cover the use of data analytics in direct marketing, how to use data on consumer behavior to improve campaigns, and how to calculate ROI and other key performance indicators. Finally, the document will give an overview of telemarketing as a method that has its roots in the distant past in direct marketing, and we will cover everything necessary for it to be successfully applied today, from ethical aspects to trends and technology, and how to use data to improve campaigns. I hope this document will help direct marketers and telemarketers to understand better this method and how to apply it to improve their results.