It looks like everything goes right until I check my inbox and I don't see the email
PHP
$mail = $_POST['your_email'];
$header = 'From: ' . $mail . " \r\n";
$header .= "X-Mailer: PHP/" . phpversion() . " \r\n";
$header .= "Mime-Version: 1.0 \r\n";
$header .= "Content-Type: text/plain";
$message = "$mail want to access the private beta";
$to = 'aca.spam@gmail.com';
$subject = 'Someone want to send a future message';
mail($to, $subject, utf8_decode($message), $header);
header("location:confirmation.html");
exit;
HTML
<form method="post" id="contact_form" name="contact_form" target="_self" lang="en" action="send.php">
<div>
<b>My email is</b> <input type="text" id="your_email" name="your_email" placeholder="email@ddress.com">
<p>and I want access to the private beta.</p>
</div>
<button type="submit">YES!</button>
</form>
When I click on submit, go to the php file, and then return to confirmation.html. Everything looks right, but I don't receive any email.