Please note that considerable delivery delays are expected due to the shortage of cargo space caused by the reduction of flights to US, and a large increase in inbound postal items in US. At this point, it is taking two weeks to three weeks to load mail items onto airplanes. US customers will see the status of your package stays “Dispatch from outward office of exchange.” Please wait patiently for a couple of weeks.
You can check what shipping method is available to your country from Japan Post’s international mail service availability chart as below.
Japan Post’s Announcements
Japan Post News
I can use DHL, but their shipping cost is more expensive.