A method, a computer program product, apparatuses and a system are shown for determining whether a predetermined user is accessible via a communication system, wherein it is intended to provide data to the predetermined user via the communication system, and in case the user is not accessible, deciding whether to store or not to store the data in a storage entity depending on an offline rule associated with the user, wherein the offline rule contains at least one out of (i) at least one accept rule for storing data, and (ii) at least one reject rule for not storing data.