The dutch postal service is honestly kinda impressive with this sort of thing. I'm pretty sure they keep a name-address database or some such, because mis-addre

The dutch postal service is honestly kinda impressive with this sort of thing. I'm pretty sure they keep a name-address database or some such, because mis-addressing a letter will still almost always get delivered correctly based on the name. IIRC it's fairly recently they stopped delivering to non-postal addresses. i.e. until recently you could address something to "The green house next to the church" and it'd get there.