Monitoring Resource Usage

Hello,

I have Proxmox installed on a remote dedicated server. Currently I am using it for personal/testing purposes. I have deployed VM's to friends to test and want to make sure that they aren't overutilizing allocated resources.

Is there a way to set set thresholds on VM's resources, i.e. (Memory, CPU, Diskspace) for the purpose of sending email alerts to me? This way I do not have to continually log in to check each VM.

I appreciate the input!

Regards,

Robert LaRose