Stop promising PO-box delivery your carrier refuses
UPS and FedEx don't deliver to PO boxes; customers type them anyway. Drydock's PO-box detection covers the formats merchants actually see — “PO Box”, “P.O. Box”, GPO Box, Locked Bag, Postfach, Boîte Postale and more.
The detection feeds any rule: hide the courier options, rename them with a warning, or block checkout outright.
Then Hide courier options — or block with “We can't deliver to PO boxes”
Test it Simulate “P.O. Box 88” → rule fires. “88 Boxwood Lane” → it doesn't.
Test first. Undo after. Always.
Drydock runs every draft rule against a synthetic checkout — real products, any address, any customer — and shows a trace of every condition with the actual values compared. Save good scenarios as test cases and they re-run on every publish, so a rule that changes an outcome gets flagged on the publish screen instead of at your checkout. Every publish is an immutable version with a diff, and restoring a previous version is one click.
Build this rule and test it in five minutes
Free plan includes the full simulator with traces. No card, nothing touches your live checkout until you publish.
Install Drydock free