As the theme of my Bachelor thesis I have chosen "E-mail as a communication tool". The reason for choosing this was the fact that a lot of people uses this communication method for its distinct advantages everyday. The number of people who communicate constantly grows. I belong to this group too and that is why I have decided to penetrate the functioning of this form of communication and discover what options e-mail offers to users. In my thesis I pursue several objectives. The first one is to chart history, present and possible future development of e-mail. I also deal with the issue how and in which environment e-mail works and what its forms of exploitation and abuse are. The next target is to compare six selected free mail providers on ...