If I enter the wrong address for a delivery, can I change it? Natalie W. April 08, 2020 16:56 Updated No. Once a delivery is accepted in the Postmates system, neither pickup nor dropoff addresses can be changed. Please cancel the delivery and replace it using the correct address(es). Related articles How do I cancel a delivery? I'm the end customer/recipient. Can you help me with my order? What if my customer isn’t available when the driver arrives? Can I contact the Postmate during a delivery? How does tipping work?