Delivery and management of status notifications for group messaging

Systems and methods are provided for managing and delivering status notifications relating to multicast messages transmitted from a sending communication device to multiple recipient communication devices. Each communication device is provided with a status agent for detecting transmission of messages to a recipient device and receipt of messages from a sending device. Upon transmission, the status agent notifies a status service of the outbound message. Upon receipt of the multicast message by one of the recipients or upon the message being marked read, the recipient status agent notifies the status service. The status service then notifies the status agent of the sending device that the message has been received or read by that recipient, so that the sending device's status agent can notify a corresponding messaging application. The status service operates to reconcile outbound message notifications and received or read status updates for multicast messages.