Computer Management
    System Tools
       Event Viewer
          Application and Services Logs
             Microsoft
                Windows
                   Task Scheduler
                      Operational

$ScheduledTaskName = "HansBackup"
$Result = (schtasks /query /FO LIST /V /TN $ScheduledTaskName  | findstr "Result")
$Result = $Result.substring(12)
$Code = $Result.trim()

If ($Code -gt 0) {
    $User = "mymail@gmail.com"
    $Pass = ConvertTo-SecureString -String "myPassword" -AsPlainText -Force
    $Cred = New-Object System.Management.Automation.PSCredential $User, $Pass
################################################################################

$From = "Alert Scheduled Task <mymail@gmail.com>"
$To = "Me Gmail <mymail@gmail.com>"
$Subject = "Scheduled task 'Backup' failed"
$Body = "Error code: $Code"
$SMTPServer = "smtp.gmail.com"
$SMTPPort = "587"

Send-MailMessage -From $From -to $To -Subject $Subject `
-Body $Body -SmtpServer $SMTPServer -port $SMTPPort -UseSsl `
-Credential $Cred
}