$EmailTo = "blabla@gmail.com"
$EmailFrom = "blabla@mydomain.com.ar"
$Subject = "Test a"
$Body = "Test Body"
$SMTPServer = "mail.mydomain.com.ar"
$SMTPMessage = New-Object System.Net.Mail.MailMessage($EmailFrom,$EmailTo,$Subject,$Body)
$SMTPClient = New-Object Net.Mail.SmtpClient($SmtpServer, 26)
$SMTPClient.EnableSsl = $false
$SMTPClient.Credentials = New-Object System.Net.NetworkCredential("blabla@mydomain.com.ar", "pass");
$SMTPClient.Send($SMTPMessage)