An exemplary method is implemented by a first end-user communication device for processing a received electronic communication that includes a digital packet having a header segment and a user data segment. The user data segment contains a first command and a user message, where the first command contains a first parameter representing automatic expiration and an associated first value representing how long the user message will be available for display by the first end-user communication device. Under the control of an enhanced services application program, the user message in clear text format is generated for display on a screen of the first end-user communication device. A determination is made of the expiration of the time set by the first value, and upon the expiration, the clear text user message is thereafter prevented from being accessed by the first end-user communication device.