Example PowerShell script to send SMTP emails from Windows

check-remote-ip.ps1

# curl / wget are aliases for Invoke-WebRequest
$ip = Invoke-WebRequest -Uri https://ifconfig.co -ContentType "text/plain" -UserAgent curl
$hostname = hostname

$EmailFrom = "no-reply@$hostname"
$EmailTo = "email@address.tld"
$Subject = "Remote address"
$Body = "Current IP address: $ip"
$SMTPServer = "smtp.mailgun.org"
$SMTPPort = 587

$SMTPClient = New-Object Net.Mail.SmtpClient($SmtpServer, $SMTPPort)
$SMTPClient.EnableSsl = $true

$SMTPClient.Credentials = New-Object System.Net.NetworkCredential(
    "login",
    "password"
);
$SMTPClient.Send($EmailFrom, $EmailTo, $Subject, $Body);