I don't know if this is what you want but:
In Outlook Express, you can create customised views to give you the exact view of your messages that you want.
On the View menu, point to Current View, and then click Define Views.
Select one or more conditions for the view you are creating.
(The View Description box describes the view as you create it. Add or delete conditions, as necessary, to create the exact view you want.)
Click an underlined word in the View Description box to choose an option or to enter a value.
Click Show/Hide to decide whether to show or hide the messages that meet the view conditions.
If you create a view that causes messages to unexpectedly disappear, simply change the Show/Hide settings for the view in order to see the messages again.
I have never used this but it may be possible to view priority messages first,or even sending priority ones before you receive mail,as i said i have never used this so i don't know if it would work.