keep mailbox marked new

[Johannes Huettemeister]

hi,

how do i keep a mailbox (in the pager) marked as new when there are
still unread mails in that box.
e.g. when i got 2 new mail in a mailbox (marked N), than enter the
mailbox and read only 1 mail, than leave the mailbox, the mailbox is
not marked N anymore, even if i left one mail unread.

does anyone got a hint?

greetz jo.