If you want to send mail or parcel to your home town, you can use Japanese post office. There are 2 Japanese post close by Liberty Cove House. One is in front of Shioiri station and another one is closed to Yokosuka city hall. This provides 24 hours service.
If you mail your loved ones in your home town, I personally recommend Japanese stamps. They have lots interesting stamps. For example seasonal, cartoon, traditional Japanese paint and so on. Some Japanese people like to collect these stamps and become stamp collector.
If you have any questions using Japanese Post Office, please ask our concierge.