TheScriptThing.ps1

$vmListFilePath = "c:\Scripts\vmlist.txt"
. c:\scripts\Set-LabPowerState.ps1

if (Test-Path -Path "$vmListFilePath")
{
    $setLabPower = @{
        Credential = Import-Clixml -Path "c:\scripts\XenCred.xml"
        XenServerUrl = "http://xs.bretty.local"
        Shutdown = $true
    }

    $result = foreach($vm in (Get-Content -Path "$vmListFilePath"))
    {
        Set-LabPowerState @setLabPower -VMname $vm
    }

    $sendMail = @{
        From       = "xs@bretty.me.uk"
        To         = "dave@bretty.me.uk"
        SMTPServer = "xsmail.bretty.me.uk"
        Subject    = "bretty.local Lab action"
        Body       = $result | Out-String
        Credential = Import-Clixml -Path "c:\scripts\mailCred.xml"
    }

    Send-MailMessage @sendMail
}