title: php send form doesn't work correctly
body: <p>It looks like everything goes right until I check my inbox and I don't see the email</p>
  
  <p>PHP</p>
  
  <pre><code>$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;
  </code></pre>
  
  <p>HTML</p>
  
  <pre><code>&lt;form method="post" id="contact_form" name="contact_form" target="_self" lang="en" action="send.php"&gt;
       &lt;div&gt;
            &lt;b&gt;My email is&lt;/b&gt; &lt;input type="text" id="your_email" name="your_email" placeholder="email@ddress.com"&gt;
            &lt;p&gt;and I want access to the private beta.&lt;/p&gt;
       &lt;/div&gt;
       &lt;button type="submit"&gt;YES!&lt;/button&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>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.</p>