1. A method for processing an electronic mail message, the method comprising: forming, in an electronic mail server, a first message comprising information about the structural parts of said electronic mail message and attributes relating to the content of said structural parts; transmitting said first message from the electronic mail server to a terminal; generating in the terminal, a second message comprising information about at least one processing in the server, directed to the content of the electronic mail message; transmitting said second message to the server; implementing said processing in the server in response to said second message; and transmitting the processed message or its part from the electronic mail server to the terminal.