Sorry. The send email was so I could easily detect when the digital inputs went high. More to ensure that the system was behaving properly (the circuit and digital inputs).
The triggerBI() at the bottom of the code is the function I thought should be doing the GET request.
Problem is it called the Ethernet.h library so I changed it to the wifi.h library which I don't think works with the nodemcu so the changed to the esp8266wifi library but not sure about the lines with ' WiFiClient client;" as" esp8266wifi" client doesn't work..
As you can see, I'm new here and don't really understand what I've copied and modified very well at this stage so can't even start debugging easily. I understand the digital channels and if conditions however.