title: Fetch an email with imaplib but do not mark it as SEEN
body: <p>I want to parse some emails from a user 's inbox but when I do:</p>
  
  <pre><code>typ, msg_data = imap_conn.fetch(uid, '(RFC822)')
  </code></pre>
  
  <p>It marks the email as SEEN or read. This is not the desired functionality. Do you know how can I keep the email at its previous stare either SEEN or NOT SEEN?</p>