title: Sent mails with phpmailer don't go to "Sent" IMAP folder
body: <p>in my CRM online system I control ingoing mails with IMAP protocol.
  Now I'm making sending mails with phpmailer and SMTP protocol.
  Everything is ok but I have one wierd thing. How to make sent with phpmailer script mails go to "Sent" IMAP folder?</p>