Powershell Script that checks for out of date definitions and sends an email out

Just sharing this as someone may need it one day.  Although this can be done by scheduling reports on SEPM, we had a need in house to manually set this script out via group policy on workstations to send an email out to thelpdesk.  Below is the script, it runs, checks the defination directory date and if it is older than 30 days, sends and email out.