Some of us don't collect, or even exchange, QSL cards. So getting "confirmed" for them isn't as important as it is for others. It takes time and effort to manage, and if you're not also into it, why bother. Don't let it annoy you, just try to understand that not everyone you talk to is into wallpaper as much as you might be.
Have him check spam and/or whitelist webmaster@qsw.me Apr 20 20:31:47 vps10 postfix/smtp[20188]: 20C851E13EE: to=<kd5lwu@gmail.com>, relay=gmail-smtp-in.l.google.com[2607:f8b0:4002:c01::1a]:25, delay=1.2, delays=0.02/0.01/0.22/0.96, dsn=2.0.0, status=sent (250 2.0.0 OK 1429561907 f9si10734106yhc.58 - gsmtp) The relevant part of that line is: 250 2.0.0 OK It was sent and gmail accepted it.