<?php 

if (!isset($_POST['email'])):
    
?>


<form id="form1" name="form1" method="post" action="<?=$_SERVER['PHP_SELF']?>">

  <p>
    <label>Nombre:<br />
      <input type="text" name="nombre" id="nombre" size="50"/>
    </label>
  </p>
  <p>
    <label>Apellido:<br />
<input type="text" name="apellido" id="apellido" size="50"/>
    </label>
  </p>

  <p>
    <label>Email:<br />
<input type="text" name="email" id="email" size="50"/>
    </label>
  </p>
  <p>
    <label>Telefono:<br />
<input type="text" name="tel" id="tel" size="50"/>
    </label>
  </p>
  <p>
    <label>Mensaje:<br />
<textarea name="mensaje" id="mensaje" cols="45" rows="5"></textarea>
    </label>
  </p>
  <p>
    <label>
      <input type="submit" name="button" id="button" value="Enviar" />
    </label>
  </p>
</form>


<? else: 



require_once 'class.phpmailer.php';
 
$mail = new PHPMailer ();


$mail->IsSMTP();
$mail->Host = 'ssl://smtp.gmail.com';
$mail->Port = 465;
$mail->SMTPAuth = true;
$mail->Username = '[email protected]';
$mail->Password = '*****';



 
$mail -> From = $_POST[email];
$mail -> FromName = $_POST[nombre];
$mail -> AddAddress ("[email protected]");
//$mail -> AddAddress ("[email protected]");
$mail -> Subject = "Formulario de Contacto";

$body  = "<strong>Nombre:</strong> $_POST[nombre] $_POST[apellido]<br>";
$body .= "<strong>Email:</strong> $_POST[email]<br>";
$body .= "<strong>Telefono:</strong> $_POST[tel]<br>";
$body .= $_POST[mensaje];
$mail->Body = $body;
$mail->AltBody = "Mensaje:";

 
$mail->AddReplyTo($_POST[email], $_POST[name]);

 
$mail->Send();



echo"<p>Tu solicitud se envió con exito.</p>";

endif;

?>

<?php

require_once 'class.phpmailer.php';

$mail = new PHPMailer ();

$mail -> From = "[email protected]";
$mail -> FromName = "Foo";
$mail -> AddAddress ("[email protected]");
$mail -> Subject = "Test";
$mail -> Body = "<h3>From GMail!</h3>";
$mail -> IsHTML (true);

$mail->IsSMTP();
$mail->Host = 'ssl://smtp.gmail.com';
$mail->Port = 465;
$mail->SMTPAuth = true;
$mail->Username = '[email protected]';
$mail->Password = '******';

if(!$mail->Send()) {
        echo 'Error: ' . $mail->ErrorInfo;
}
else {
{       echo 'Mail enviado!'.
}

?>

Emails con smtp phpmailer y servidores de gmail

PHP