PowerShell script to email users if password expires soon, and send a summary to IT

I wanted to expand on my previous script: powershell-to-list-all-users-and-when-their-password-expires, so that it would send the user an email if their password was going to expire soon. Additionally I wanted to send a summary to our IT staff of accounts that were going to expire soon.

Here is that script:

$maxdays=(Get-ADDefaultDomainPasswordPolicy).MaxPasswordAge.TotalDays
$summarybody="Name `t ExpireDate `t DaysToExpire `n"

(Get-ADUser -filter {(Description -notlike "IfYouWantToExclude*") -and (Enabled -eq "True") -and (PasswordNeverExpires -eq "False")} -properties *) | Sort-Object pwdLastSet |
foreach-object {

$lastset=Get-Date([System.DateTime]::FromFileTimeUtc($_.pwdLastSet))
$expires=$lastset.AddDays($maxdays).ToShortDateString()
$daystoexpire=[math]::round((New-TimeSpan -Start $(Get-Date) -End $expires).TotalDays)
$samname=$_.samaccountname
$firstname=$_.GivenName
if ($daystoexpire -le 3){
	$ThereAreExpiring=$true

	$emailFrom = "[email protected]"
	$emailTo = "[email protected]"
	$subject = "$firstname, your password expires in $daystoexpire day(s)"
	$body = "$firstname,
	Your password expires in $daystoexpire day(s).

	Please press Ctrl + Alt + Del -> Change password"

	$smtpServer = "smtp.yourdomain.com"
	$smtp = new-object Net.Mail.SmtpClient($smtpServer)
	$smtp.Send($emailFrom, $emailTo, $subject, $body)

	$summarybody += "$samname `t $expires `t $daystoexpire `n"
}
}
if ($ThereAreExpiring) {
$emailFrom = "[email protected]"
$emailTo = "[email protected]"
$subject = "Expiring passwords"
$body = $summarybody
$smtpServer = "smtp.yourdomain.com"
$smtp = new-object Net.Mail.SmtpClient($smtpServer)
$smtp.Send($emailFrom, $emailTo, $subject, $body)
}