The aim of the present invention is a system (100) for selecting a message suitable for delivery to a user (111) of telecommunications services. This system (100) comprises a first database (107) including a range of statuses characteristic of said user (111), each status occupying a specific place in a series of possible statuses, and transitions between the different statuses, a second database (108) including a range of messages suitable for broadcast to said user (111) and a third database (104) incorporating a history of messages already broadcast to said user (111). The system (100) also comprises a calculator (101) comprising transition detection means (112) and means of determining the current status of said user (111) based on data provided by said third database (104), means (113) of associating said current status with a message included in said second database and means (103; 115; 114) of determining the moment to broadcast said message to said user (111).