Mutt automatically remove 'N' flag from e-mail after it was opened. I don't want to mark this flag again after I saw content of mail. It would be better to override Mutt 'mark as read' behavior only when I enter specific command or particular rule applied i.e. content has been seen over 10s.
How to disable Mutt automatic 'N' flag removal ? Is it possible to apply rules to trigger 'mark as read' ?