What you control. Set in Tacey, per store.
These are the settings on this tool's page in Tacey, in the words the app uses. Where a setting has a default, it is stated.
Ask the customer to confirmShow the corrected address and make the customer confirm before it is saved. On by default.
When to suggest a correctionOnly when something looks wrong (the default), every time, or never. Tacey still checks the address when you choose never; it just does not show a suggestion.
Apply confident corrections automaticallyOff by default, because it changes where a parcel goes with nobody confirming it.
Block addresses we can't confirmRefuse to save an edited address the check cannot confirm, until the customer picks the suggestion or corrects it. Off by default.
PO boxesWarn the customer that their carrier may not deliver to one, or refuse PO boxes outright.
Keep edits inside the original countryOn by default. The country field shows the order's own country and the customer is told to contact you to change it. Turn it off and they see a dropdown of every country you ship to.
When an address change moves the order into a different shipping zoneDon't allow the change and ask the customer to contact you (the default), keep the original shipping fee, or charge the customer the difference.
Form shapeShow a company field, hide address line 2, and set a maximum length for each address and name field.