The job: answering the question before it is asked
How it works in most branches today
A consignee calls the branch. The branch calls the driver. The driver is on the road, so the call is missed, and someone rings back twice more before an answer exists. Multiply by the number of consignments in transit and a substantial part of a branch day is spent relaying information that the operation already holds.
A notification plan converts that information into outbound messages at the moments it changes. The point is not automation for its own sake. It is that a consignee who knows the delivery slot does not call, and a consignee who is told about a delay early is a different conversation from one who discovers it by waiting.