Communication is an integral part of business management because virtually nothing can be achieved without its application and has a very important role to play in gaining an impression of the organization, product, or service and can represent the line of success and failure. Today's marketing communication is focused on customer relation management over a period of time. To be successful businesses must offer more and more products or services, and this will be best achieved by informing consumers and clearly incorporating into their awareness of the positive features of products and services. The marketing communications plexus in Croatia post is being carried out through advertising, sales promotion, events and experiences, public relations and publicity, direct marketing, interactive marketing, marketing by word of mouth and personal sales. It is important to achieve continuity and transparency in communication. An excellent example of a company that continuously invests in its corporate communications is the Croatian Post, and this is evidenced by many of awards that Croatia has received over the years with good quality communication within the company itself as well as with the community in which they operate on a daily basis. Croatian Post is an example of success built to the quality of products and services that its customers provide both to the quality of products and services and to the seriously planned and implemented corporate communications strategy.