This document discusses email filtering agents and how they can help organize incoming emails and remove spam. It defines email filtering as the automatic processing of emails according to specific criteria to organize them. The document outlines the need for email filtering to organize incoming emails and remove spam and viruses. It describes the two main types of email filters: inbound filters that scan incoming messages and outbound filters that scan outgoing messages. It also discusses why some emails may go to spam by default, such as due to certain phrases, poor formatting, or lack of contact with the recipient.