Fewer mistyped slips: check and fix each order before you download
Only orders still to ship: exported ones stay hidden, so none is typed twice
Set Yamato boxes per order; choose a saved sender for each export
Import issued B2 data to add tracking numbers
Bad addresses stop label imports. Japan Shipping Label CSV makes the CSV for Yamato B2 Cloud or Click Post from your unshipped orders in Japan, each time you ask; it is not a constant sync. Pro lists each order with an address problem, such as a postal code that lost its leading 0, with a suggested fix and its before and after. Orders going abroad are left out.
Before you download, postal codes, phone numbers and names or addresses over the carrier's limits are checked, and a postal code that disagrees with its prefecture or a character the label can't print is flagged. Free shows how many orders have a problem. A fix is applied only when you press it, and only in the CSV.
Exported orders stay hidden, and the last 10 exports can be downloaded again without counting against your month. Issued B2 data can be imported to add tracking numbers.
Free: 30 orders a month. Pro: no limit, plus the address check list and fixes, Kuroneko Yu-Packet waybills and shipping method rules. B2 Cloud needs your own Yamato contract. The file follows Yamato's published layout but has not been tried in a real B2 Cloud account. The screen is in Japanese; recipient details stay in your browser.