Dynamic content email seems to be the best form of advertising because it is completely adjusted to the needs and interest of each one client. It may sound strange. How come one message sent in the program of email advertising campaign, be at the same degree adjusted to each potential customer? And the answer is – it is possible thanks to the dynamic content email. That kind of message contains some special program or system that monitors the most often visited web pages and other data thanks to what, the assumption about interests and things which may be needed, is made. And when the message is delivered, it takes into consideration all available data, and vividly speaking, it changes it content. Of course, firstly the specialist should prepare many forms and options of the message, thanks to which the change is possible. Dynamic content email does not mean that the message can think – it is only programmed according to assumptions, predictions and well-known information. But this seems to be enough.