Duplicate emails attached to a Request only when coming from external (Outlook)
Duplicate mails are created when you send a mail from Microsoft Outlook to the ServiceDesk Email address, using the patter [Request:###ID#] pattern in the subject.
This behaviour does not occur in the first 4 or 5 minutos from the Start Fetching action. After that time, all mail you try to attach to a request appears duplicated under client conversation.