1. A method of tracking access status of store-and-forward messages transmitted in a communications network, the method comprising: selecting content for insertion within a store-and-forward message, the content including data for display within a display of a receiving terminal and control data comprising data indicative of a user selectable portion within the display, said display data including data for display in the user selectable portion; creating a store-and-forward message comprising the selected content for transmission to a receiving terminal; transmitting the created store-and-forward message to the receiving terminal; and responsive to receipt of data indicative of selection of the user selectable portion within the display, modifying the access status of the transmitted store-and-forward message, wherein the display data and the control data originate from a network location other than a terminal adapted to send messages in the communications network.