Overnight, Overextended: What Courier Guarantees Conceal About the Infrastructure Behind Next-Day Delivery
Next-day delivery guarantees are among the most commercially influential promises in the US logistics industry—and among the least scrutinized. The infrastructure that makes overnight shipping possible is subject to weather disruptions, hub capacity constraints, and regional network fragility that carriers rarely disclose to shippers until a service failure is already in progress. For businesses that have built customer commitments around guaranteed next-day timelines, understanding what sits be