A system, a device, a terminal and a method for filtering electronic information to be transferred to the terminal through a telecommunication connection. The invention includes attaching a specific filtering parameter by the device transferring the electronic information to the electronic information for the purpose of filtering before the electronic information is transferred to the terminal through the telecommunication connection, and informing the terminal of the filtering parameter before the electronic information is transferred to the terminal through the telecommunication connection. In the terminal, the steps include checking the informed filtering parameter and allowing or preventing the receiving of the electronic information on the basis of the filtering parameter. In response to allowing receiving, the electronic information is transferred to the terminal through the telecommunication connection, and in response to preventing of the receiving, the electronic information is not transferred to the terminal through the telecommunication connection.