I used to do some stuff with IFTTT ages ago, but have not looked at it lately. Do you remember Yahoo Pipes? I've not looked at more recent alternatives.
I need to get back into using Home Assistant to automate some things around the home, but it could link in with some external systems.
Pipes was so ahead of its time :)
I need to get back into home automation stuff, I haven't done anything since we moved back to the UK but I got quite into it over there