Email server is partially working, well enough to send emails out to users during the registration process. The station details can now be entered when registering.

This means that new users can now register!

However when entering their username and password into RadLog or pyradmon, data sending will not work quite yet. That needs a bit more work.
Solar powered Raspberry Pi 4 server stats: CPU 41% Memory 17% Swap 0% Filesystem 37% used CPU temp=76.0'C Uptime 21:53, Days