Let say I have a nxt node up on my lamp server and I want to monitor a few NXT / Ardor addresses for activity and then email me. How can this be done? Is there a special setting or a snippet of php code I can use to do something like this? Or do I have to constantly query the NXT server to check if an address has any activity at all?
I know about https://arguseyes.net/ to monitor transactions, but was wondering how to do it myself.