Need to Convert Outlook PST File to Lotus Notes? There are various reasons which create a requirement for you convert all your emails from Lotus to Outlook like: Difficult to maintain Outlook, Chances of Virus attack in Outlook is more. You need to convert PST email information to Notes. You can use SysTools Outlook to Notes tool using which you can easily and quickly export all your emails along with file attachments to Outlook with utter ease.