index.php
<center><br>
<form action="mail_b.php" method="post">
<textarea name="content" cols="40" rows="15"></textarea><br>
<input type="text" name="email" value="Twój e-mail"><input type="submit" value="wy?lij" style="BACKGROUND-COLOR: #C5C5C5;  FONT-FAMILY : Verdana; FONT-SIZE : 12; color: #FFFFFF">
</form>

mail_b.php
<?PHP
    $adresat = 'mojemail@poczta.fm';
    @$email = $_POST['email'];
    @$content = $_POST['content'];
    $header =     "From: $email \nContent-Type:".' text/plain;charset="iso-8859-2"'."\nContent-Transfer-Encoding: 8bit";
    if (mail($adresat, 'Mail ze strony x.x', $content, $header))
        echo '<center><br><br><p>Wysłano wiadomo?ć</p>';
            else
        echo '<center><br><br><p><b>NIE</b> wysłano maila!</p>';
?>