I would like to receive an email when that criteria is being met.
Also other critical alerts might be smart to mail.
Before someone advises scheduled reports;
1. Downside of scheduled reports is that those reports can be ignored, especially because a report is added as attachment without information in the body of the email itself.
2. Scheduled reports are always emailed even when criteria isn't being met.
3. And in the case above a report of active computers doesn't work because active computers isn't the same as inventoried computers.