A method for delivering messages in a telecommunications network includes delivery of a first text-form message of a session N to the user of the service, in such a way that the sender address is convened to correspond to the session number N and the session stage J, in stages 2-n of the session N. Thus, a text-form message is received, from the user of the message service, at the sender address defined in the message in the previous stage, and the session proceeds according to the contents of the message, in such a way that the sender address is converted to correspond to the session number N and the new session stage J, and the next text-form message of session N is sent to the user of the message service.