The arrival of the Information Technology (IT) to the reality of the people increased the quality and capacity of the technical resources for the distribution of information and knowledge. The e-mail speeds processes, facilitates the exchange of information, and provides for an economy of time and money. But what is its effect into the work relations? Can technologies facilitate the performance in work groups? It is necessary to think on the organizational communication as the possibility of interlocution between collaborators, and as a mechanism of collaborative management. This work aims to identify which is the function of the e-mail in the organizational communication, deciphering its main characteristics of use. This was an exploratory research, based on interviews with 15 people who act in different areas and hierarchic levels of big and small companies. As a result of this work, a distinguished perception that the e-mail became an indispensable component to the dynamics of organizations and that the individuals verify a relation of almost dependence to this instrument. In general, it is perceived as being a practical, fast, direct, objective and efficient media. The perception is that the e-mail speeds up and stretches the work process. But it has situations where the interpersonal communication is necessary and it should not have to be substituted, as well as the telephone. Amongst the aspects that affect the communication positively, the interviewed subjects depicted the organizational environment and the interpersonal relationship. Amongst the negative aspects, the very rigid hierarchic structure and the difficulty and/or lack of integration within the areas of the companies, were mentioned as being the main concern of the interviewed.