A message link server maintains secure message links with device link agents on each of a plurality of wireless end-user devices. Plural network elements send messages to the message link server, the messages targeted for delivery of message content to specific software components on respective ones of the wireless end-user devices. A message buffering system in the server buffers messages targeted to each device until one of several triggers occur, such that messages that do not have time-critical messaging needs may be buffered until the occurrence of a trigger other than the receipt of that message by the server.