<?php

 if(isset($_POST["name"]) && isset($_POST["second"]) && isset($_POST["email"]) && isset($_POST["message"])) {
    $name = $_POST["name"];
    $second = $_POST["second"];
    $email = $_POST["email"];
    $message = $_POST["message"];

    $to = "ololololololo@gmail.com";
    $subject = "A new message from website!";
    $body = "Имя:" . $name ."n" . "Отчество:" . $second ."n" . "Имейл: " .$email ."n" . "Сообщение:" . $message;
    $header = "From :" .$email;

    if (mail($to, $subject, $body, $header)) {
        echo "Success";
    }
    else {
        echo "Fail";
    }
  } else {
    echo 'Поля пусты.';
  }
?>