DHL Express generally does not deliver to P.O. Boxes, as their services are focused on providing reliable shipping to physical addresses. This policy is in place because deliveries often require a signature upon receipt, and a P.O. Box does not provide a way for the courier to obtain a signature. Instead, it is advisable for customers to provide a full street address for their shipments to ensure timely and proper delivery. If a street address is not available, customers may want to consider alternative shipping options that accommodate P.O. Box deliveries. For specific details or any updates on shipping policies, it is a good idea to check the current web page for DHL Express, where additional guidance can be found.