Get-ChildItem D: -Recurse -File | Measure-Object | %{$_.Count}

$Count = Get-ChildItem D: -Recurse -File | Measure-Object | %{$_.Count}
$Status= $Event.Message
$From = "sender@sender.com"
$To = "receiver"
$SMTPServer = "smtp"
$SMTPPort = "587"
$Username = "email@email.us"
$Password = "password"
$Subject = "$computer,Files count"
$Body = "Number of Files is $Count |D drive test "
$smtp = New-Object System.Net.Mail.SmtpClient($SMTPServer, $SMTPPort);
$smtp.EnableSSL = $false
$smtp.Credentials = New-Object System.Net.NetworkCredential($Username, $Password);
$smtp.Send($From, $To, $subject, $body);
$computer = "$env:computername