Storing SMTP-Credentials will enable DietPi to send events by Email. Like Disk corrupt, CPU hot, unexpected reboot, etc...
If it possible to store them hashed/encrypted only on the device, I'd favour this feature, too. Active alerting is sometimes handier than passive monitoring.
I'm doing this with Node-Red and Graphana. Shows CPU-Load, Temp on a web-page and Graphana can send alerts if a value is out of defined range.
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