Choose Show Other Scripts from SpamSieve’s SpamSieve menu. Copy the files from the For PowerMail 4.x Users folder to the PowerMail Scripts folder inside the PowerMail Files folder. The PowerMail Files folder is probably located in your Documents folder.
If you want SpamSieve to label messages that it thinks are spam, set up a filter in PowerMail that looks like this:
If, instead, you want SpamSieve to move suspected spam messages to a Spam folder (that it creates automatically), set up the filter to use the SpamSieve - Move If Spam script instead.
Now proceed to the Do an Initial Training section. To train SpamSieve with spam messages, select one or more of them and then choose SpamSieve - Train Spam from PowerMail’s Scripts menu. To train SpamSieve with good messages, select one or more of them and then choose SpamSieve - Train Good from PowerMail’s Scripts menu.
SpamSieve will process new mail automatically. If you ever need to manually ask it to sift through a mix of spam and good messages, select the messages and choose SpamSieve - Label If Spam or SpamSieve - Move If Spam from PowerMail’s Scripts menu.