[divbzero]

As a slight variation, you could send an alert to the PagerDuty API by replacing “Send email alert” with something like:

  # Send PagerDuty alert
  curl -X POST https://events.pagerduty.com/...

[runjake]

Added.

In fact, this is what I'd recommend (though I use Pushover), because then you don't have to be concerned with email setup, not getting caught in spam filters, firewalls, etc. You could also send a Slack/Teams alert with a similar POST.

For some reason, I thought I had read that OP wanted to send an email.

[zikduruqe]

Or apprise for a whole bunch of notifications.

https://github.com/caronc/apprise