These are some remix files for AdaFruit's IOT mailbox, for use with a NodeMCU ESP8266. The original code doesn't work anymore since GMail changed their protocol, but I modified it to be an MQTT sensor / automation instead. I also added some LED notifications on the post from @sb43201's version. I also created a ventilated door, because I was able to put a temperature sensor inside.
An MQTT setup of some sort - I'm using Home Assistant - if you don't know what this is, I suggest diving into this part first.
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