Some applescript to move messages from an Outlook inbox to a dated folder in your On My Computer folder.

inbox2dated.scpt

tell application "Microsoft Outlook"
	activate
	set folderName to "Inbox"
	if name of selected folder is not equal to folderName then set selected folder to inbox
	set selectedMessages to messages of selected folder
	repeat with theMessages in selectedMessages
		set {year:y, month:m, day:d} to time received of theMessages
		set datedFolder to "" & y & "-" & m & ""
		if not (exists mail folder datedFolder of on my computer) then
			make new mail folder with properties {name:datedFolder} at on my computer
		end if
		set destFolder to mail folder datedFolder of on my computer
		move theMessages to destFolder
	end repeat
end tell