Hi @c0lby,
Like @adam mentioned our scheduler will blindly send notification emails regardless of the state of the device or whether anything actually happened, so that part make sense to me. I’m troubleshooting some Pis showing as offline that really aren’t both on my own network, and with some users in this thread.
The next time you notice one in this state, could you try to SSH or otherwise access it and let me know if it otherwise has internet connectivity (like pinging Google or something like that). I’m curious to know if the Pi was actually offline or Cayenne is just incorrectly seeing it that way.