No need to mention that Japan Post offers reliable, efficient and fast mail service for both of inbound and outbound mail.
Here is a recent Registered Airmail outbound experience:
12/11/2013 13:47 – Posting/Collection, SETAGAYATODOROKI, TOKYO 158-0082
12/11/2013 23:16 – Arrival at outward office of exchange, TOKYO INT, TOKYO 138-8799
12/12/2013 22:34 – Dispatch from outward office of exchange, TOKYO INT, TOKYO 138-8799
12/17/2013 07:59 – Arrival at inward office of exchange, ISTANBUL OE, TURKEY
Todoroki is a district of Setagaya-ku (-ward) in Tokyo.
It’s very fast, total 6 days only!
Turkish Post and Japan Post have extremely fast mail exchanging operations. Turkish Airways flies to Tokyo and Osaka every day.