BlackBerry Limited
Partial message delivery and status notification in an end-to-end secure messaging context

Abstract:

A system and method for determining and providing updates of message status for a message sent from a sender mobile device to a recipient mobile device includes a provider system configured to transmit notifications of messages to a recipient device using a push notification service in addition to transmitting the message to the recipient device over a distinct communication path. When a message is received from a sending device, the provider system initiates a push notification, which may be routed through a third-party service, and based on that push notification sends an initial notification of delivery to the sending device. When the recipient device acknowledges successful receipt and processing of the message, the provider system transmits a final delivery notification to the sending device. The use of the push notification service may be based on a determination of a current state of a receiving application executing on the recipient device.