This incident remind me of a funny story. Once we had a senior consultant visiting us in Doha (won't mention the nationality). It was his first visit and the guy was keen about understand the area. It so happened that we had a big map in the office for the Gulf region. We took good time explaining to him the geography of the area.
Following his few days visit, he left and we were expecting some material from him to be sent by mail (not email). We gavehim our business cards and all the ordinated.
So the guy - thankfully - sent the required material by post. The address was:

xxx company
P.O.Box xxx
Doha - Qatar
Kindgom of Saudi Arabia.

The funny thing, it arrived on time :)))))