UPS, FedEx, DHL and other couriers can't deliver to PO boxes, so those orders bounce back or need a costly fix. PO Box Shipping Carrier Guard checks the address at checkout and asks for a street address when the chosen shipping option can't reach a PO box. Choose which of your shipping options go by mail, like USPS, and customers can still use a PO box with those. Prefer no PO boxes at all? Block them everywhere. Setup takes a minute, with no code or theme changes.

• Blocks PO box addresses at checkout for courier shipping options
• Allows PO boxes with USPS and other mail services you choose
• Finds your shipping rates and suggests which ones ship by mail
• Block all PO boxes or allow them everywhere with one setting
• Runs as a checkout rule, with no code or theme edits