This is for about JH1HST QSL.
If HL4ZHE case, to about QSL Method into HL4ZHE page.
Note; This is basic plan, hoping best. But all is not.
Posting issue
POST-Service often temporary stop by international incident. If that case, that process get a slow and posting later. Also, if the airmail is stopped for a long time, I may use surface mail.
JAPAN-POST Info of Airmail situation (Check: *Temporarily stop countries.)
If no get after a few month. As honesty, Paper QSL card is no bad, however the reach to your hand with hard situation and long time later. I can said that is best if it's possible within short time and no pay. But so not. So I recommend that use combine eQSL and LoTW in first. Even so, maybe need Real-card in something award case. So You can 2nd request if you can not receive a requested Card, after check a few delivery-route. If 2nd Card has troble, you have to necessary see more postting-route before 3rd again, right?
This is sub-plan though… If you able to manage QSL card via BURO, may use BURO is good idea. You know BURO is too late delivery however at one side, fee is close to free. I joined JARL so will able to get via JP-BURO. Then, if BUROs CARD include “PSE QSL CARD” written in that case so I will reply via BURO.
About QRZ.com , QRZ.com also has an email address for inquiries.