I am curious to know how do you verify these addresses? what methods you use? I recently built one for a client using Google maps api and it was not as easy and accurate as I thought.
We use data provided by local post offices from the country you specify. It was really hard to build, aggregate the data, and than standardize the input and output. Would appreciate any feedback you have on it.
I have been researching this topic and it seems to me that many countries use varying depths of administrative division levels in their postal systems. Your api seems to stick to a single "state". Do you just assume that the first major division under country, and will you ever support more granular divisions?
We have the ability and might open the api more but right now we wanted to make it simple. PM and we can talk about your specific use case.