Mail test

mail.php

<?php

    $to = "mail@example.com";
    $header = "From: {$to}";
    $subject = "Hi!";
    $body = "Hi,\n\nHow are you?";
    if (mail($to, $subject, $body, $header)) {
        echo("<p>Message successfully sent!</p>");
    } else {
        echo("<p>Message delivery failed...</p>");
    }

?>