C<lei export-kw> propagates keywords (e.g. C<seen>, C<answered>,
C<flagged>, etc.) from lei/store to IMAP folders and/or Maildirs.
C<lei export-kw> propagates keywords (e.g. C<seen>, C<answered>,
C<flagged>, etc.) from lei/store to IMAP folders and/or Maildirs.