RadioMail was easy to set up and use.
Sorry, the attached image has too much information.
ICOM ID-31Plus - Mobilinkd TNC3 needed an extra cable for a snug fit.
Testing was done with a dummy load.
Most time spent was with Windows 10, SoundModem setup for P2P packet testing.
Japan only has one listed gateway Winlink on 70cm.
Kevin JJ1PJI