[dervjd]

Not OP, https://healthchecks.io is great for monitoring automated tasks like backup scripts. Also has the option to immediately signal failure and send an alert: https://healthchecks.io/docs/signaling_failures/

[remram]

That's what I use for cron-type things. Experience has been great. I also run it as a watchdog in my alertmanager container, so I am alerted if the alerts are broken.