Improved methods, apparatus, and systems for generating a corrective pickup notification for a shipped item using a mobile master node are described. For example, a mobile master node involved with a delivery of the item (such as a courier's mobile master node) identifies an intended delivery location related to the item. Location circuitry within the mobile master node then detects a current location of the mobile master node. The mobile master node uses the intended delivery location and the current location of the mobile master node to automatically sense an adverse delivery condition related to the item (such as an incorrect location for delivery of the item, moving away from the intended delivery location, or incorrect delivery times for the item based upon deadlines and time ranges for delivery). In response to and based upon the sensed adverse delivery condition, the mobile master node then generates the corrective delivery notification.