Código PHP:
require_once "Mail.php";
$host = "mi host";
$username = "";
$password = "";
$To_ = $correoUsuario;
$From_a = "[email protected]";
$ToBcc = "[email protected]";
$Asunto= "Mi asunto";
$Cuerpo = "Nos permitimos acusar recibo de su registro en la página";
$headers = array ('From' => $From_a,
'To' => $To_,
'Subject' => $Asunto,
'Bcc' => $ToBcc);
$smtp = Mail::factory('smtp',
array ('host' => $host,
'auth' => false,
'username' => $username,
'password' => $password,
'debug' => false,
'persist' => true ));
$mail = $smtp->send($To_, $headers, $Cuerpo);