I would add this question1
to the list of questions which in my mind are potentially mis-understanding the specific meaning of Internet of Things. Even without a specific, clear definition, we accept this term means something in the context of smart-home, smart-city, smart-office, smart-farm, smart-hospital.
My example, and the Google email question seem, to me, fairly clearly off topic. There is nothing in these questions to give them a specific IoT context, they are simple things on the internet questions.
Questions about IoT cloud services seem on-topic, particularly the ones detailed in this answer. Various providers have come and come in this space in the past few years, as opposed to the more generic rent-a-server cloud offerings. If we want expert answers, we need questions which appeal to low-level developers.
Questions about an application of IFTTT are not automatically off-topic, although I imagine some ifttt questions might be borderline depending on the subject. More likely, I'd expect ifttt could attract too-broad questions or no-research rather than off-topic.
1: Question is deleted and is only visible with 4k reputation.