The SpamFilter allows to separate/filter non-spam from spam e-mails prior to downloading them. With the weak filter all e-mails coming from addresses on the "Black list" go to the spam box. With the strong filter all e-mails coming from addresses not on the "Safe list" go to the spam box.
The advanced filter is useful when spamers manipulate e-mail's headers, use fake e-mail addresses, "undisclosed" recipients, and similar tricks to avoid spam filtration. Users can preview e-mails, move messages to/from the spam box, add e-mail addresses or domains to "Safe list"/"Black list", and delete messages directly from the server without downloading them. This program handles any number of POP3 accounts. It can be used to prevent infections by viruses via e-mail.