pop3despam (renamed from Spamhammer) looks at an account on a POP3 server and checks the "From" field of each message. The field is compared to a list of addresses on your computer to determine whether the message is from someone you know or someone you don't want to know. A message not matching the address list can be deleted from the server if you wish. A log is kept of the Message-ID, date, and who it was from (if deleted).
