Data Sync has the functionality to help you extract attachments from emails.
Start by connecting your Source to Exchange.
Within the property window there is a property called
ExportFormat, change this value to be
AttachmentDocumnet. And set the
ExportDocumentFileTypes to be the file type you are expecting (e.g.
Connect the target to the folder you want to extract the attachments to and then congifure the schema map.
You can add a filter to limit the number of items returned.