A messaging system is provided that includes: (a) an interface 206 for receiving a request to play a message audibly to a subscriber; and (b) a message retrieval agent 224 for determining whether the message comprises marked information. When the message comprises marked information, the agent 224 performs one or more of the following operations: (b1) display the marked information to the subscriber; (b2) alter an audio playback speed of the marked information to the subscriber, the playback speed of the marked information being different from a playback speed of unmarked information; and (b3) audibly play only one of the marked information and unmarked information to the subscriber.