title: get email unread content, without affecting unread state
body: <p>Right now its a gmail box but sooner or later I want it to scale.</p>
  
  <p>I want to sync a copy of a live personal mailbox (inbox and outbox) somewhere else, but I don't want to affect the <code>unread</code> state of any unread messages.</p>
  
  <p>what type of access will make this easiest?  I can't find any information if IMAP will affect the read state, but it appears I can manually reset a message to unread.  Pop by definition doesn't affect unread state but nobody seems to use pop to access their gmail, why?</p>