One of my apps was updated automatically .. and after that it had an issue and saw a huge spike in graph. I didn't notice it until I logged into pihole and saw the huge mountain of spike.
Would be nice to have a % option which we can config and say if pihole notices 20% or 30% increase on average 24 hr graph then sends an email notifying the same - and perhaps even email which IP is doing it in report (or more detailed report HTML based)
Would be very nice to have this feature as sometimes we forget pihole is even running so smoothly and that in the background some broken app or a computer might be bombarding it.