You can use this service with functions such as the “Label creation” feature on the Japan Post Official App (JPN ver only).
Tap “Enter with Digital Address (JPN ver only),” enter the Digital Address (JPN ver only), and then tap [Convert to address] to automatically enter the address.
Please note that the services where Digital Address (JPN ver only) can be used are being gradually expanded, and they are also introduced on the Digital Address (JPN ver only) introduction page.
<Digital Address service introduction page is here>
https://lp.da.pf.japanpost.jp