Script to Verify PST Backups on our NAS

Hi Everyone,

So my boss has tasked me with writing my first PowerShell script and I'ma little stuck (I've been researching as best I can). I need to write a script which checks our NAS and sends an email to users who haven't backed up their email in the last 8 days. Some users have old archives which haven't been touched in a long time so I can't just put in the path of the server -r as it will be sending emails to the users for these old archives also. Here is what I have so far, any guidance would be greatly appreciated.

$time=(Get-Date).AddDays(-8)$path="\\nas03\Backup\Client_PST\user0",`"\\nas03\Backup\Client_PST\user1",`"\\nas03\Backup\Client_PST\user2",`"\\snas03\Backup\Client_PST\user3",`"\\nas03\Backup\Client_PST\user4",`Get-ChildItem-Path$path-Force|`Where-Object{$_.LastWriteTime-lt$time}