If you do not have a massive Email activity and plenty of disk space, there is no need to compact the files. Surfing the web on compacting, gives me the wobbles. Many users have had problems with compacting with lost files, folders and messages. Me ? No thanks, I play it safe and leave compacting in the minds of enthusiastic MS protagonists.
When you reach 100 OE open and closures a pop-up will come on screen saying "To free up disk space, Outlook Express can compact messages. This may take up to a few minutes. OK? Cancel"
From then on, every time you open OE the message to compact will pop up. Excruciatingly annoying.
But never fear, you can get rid of this curse so that it only pops up every 100 open and closures.
To reset it manually:
1. Close Outlook Express and all message windows.
2. Click Start> Run and type without quotes "regedit".
3. Navigate to this key ;-
where GUID is the long number used for your Identity.
4. In the right-hand pane, double-click "Compact Check Count", then change the value to zero. I chose the "decimal" value option when resetting the value in the "compact check count" dialog box, it is a normal digital value.
5. Close Registry Editor.
Having set the Compact Check Count to zero, the pop-up panel will not occur again until it reaches 100, then you simply repeat the procedure and reset it to zero.