As the OutlookEX UDF - Help & Support thread has grown too big, I'm starting a new one.
The original thread can be found here.
Based on your explanations I suggest to try the example from the wiki again. I have added some error checking so we might see why it doesn't work.
Please change the lines marked with " ; <=="
#include <OutlookEX.au3>
Global $oOutlook = _OL_Open()
_OL_ErrorNotify(2)
; Create the mail item
Global $oItem = _OL_ItemCreate($oOutlook, $olMailItem, "", "", "Subject=TestMail", "Body=TestBody")
; Add Jon Doe as recipient
$oItem = _OL_ItemRecipientAdd($o