1. A method of retrieving a data object to a first user communication application in connection with establishment of a communication service with a second user communication application, characterized in that the method comprising in the first user communication application the following steps: determining an occurance of a triggering event; acquiring a communication service address associated with the triggering event; assembling a request for a data object associated with the communication service address, the request comprising at least two parameters, a first parameter representing the communication service address and a second parameter representing the determined triggering event; sending the request for the data object to a data object server; receiving the data object or an indication of the data object from the data object server in view of the parameters; processing the received data object or indication of the data object.