Email spam is a scourge that few can escape, slowing productivity and making it more difficult to focus on important emails. POPFile is an online tool that allows email users to sort incoming messages into categories that they create themselves. This allows users to manually classify emails in their inbox as spam. The system then "learns" to classify these emails based on your input. Users can create other categories that may also aid in organization, e.g. "work" or "personal." Interested readers will find both Windows and Mac OS X versions of POPFile for download.