ok, it seems that this page allows only one message to be marked as a solution, while I see at least two:
@pmh – Apps → Configuration - Choose Pool, then search for scrutiny, then install/deploy, scrutiny on Github: GitHub - AnalogJ/scrutiny: Hard Drive S.M.A.R.T Monitoring, Historical Trends & Real World Failure Thresholds
@joeschmuck – Multi-Report, discussed here and source on Github: GitHub - JoeSchmuck/Multi-Report: FreeNAS/TrueNAS Script for emailed drive information.