gistfile1.php

<?php
if(isset($_POST['email'])) {
  $to = "[email protected]";
  $subject = "Contato";
  $name_field = $_POST['name'];
  $email_field = $_POST['email'];
  $phone = $_POST['phone'];
  $message = $_POST['message'];

  $body = "From: $name_field\n E-Mail: $email_field\n Telefone: $phone\n Mensagem:\n $message";
  $from = "From: $email_field";

  mail($to, $subject, $body, $from);
  echo "Seu contato foi enviado!";

} else {
  echo ".";
}
?>