Systems and methods are disclosed that deliver a text message to a mobile device in a wireless communication network, where a prior delivery attempt to the mobile device in the wireless communication network has failed. The system in one embodiment includes a subscriber server in an IMS network that receives a first request from a message center to be notified if the mobile device becomes available in the wireless communication network. The subscriber server transmits a second request to a subscriber database in the wireless communication network to be notified if the mobile device becomes available. If the mobile device does become available, the subscriber server receives a first notification from the subscriber database that the mobile device has become available. The subscriber server then transmits a second notification to the message center that the mobile device has become available.