Some "training" may be required to minimize false positives. By clicking "mark as not a scam" eelpout will no longer consider messages from that address. Messages from addresses in your contact list will be considred trusted and not scanned.
Known issue: If you go from a message that eelpout thinks is a scam to an empty folder, such as drafts, the warning message will remain in the preview window. Clicking on a different message will correct this.