Originally Posted by
derjodel
I believe this is a chat exchange. E.g. SMS/iChat, Whatsapp, Slack or the like. It was still stored on somebody's device or server, so it's a "record".
Most likely Microsoft Office Communicator or Skype which automatically archive conversations into a Microsoft Outlook folder. Should be easily retrieved from a users email account, along with regular email, when collecting evidence to forward to an external agency.