SpamAssassin is an email utility that attempts to filter spam by examining incoming email and testing for spam characteristics. It uses (Bayesian spam filtering and network testing to screen incoming email. This results in an overall score. If an incoming message reaches a predefined score, the message is discarded.
This score can be set under the Filters heading. The default setting is 5. It is possible to disable SpamAssassin by returning to the SpamAssassin page and clicking Disable SpamAssassin.
Enabling the spam box will create an additional folder, named “spam,” where spam mail will be sent. This can be useful in preserving mail that may have mistakenly been filtered by SpamAssassin. It is recommended that you enable this feature. This feature also comes with a Clear Spam Box function that will delete the messages in the spam box. It is possible to disable the spam box by returning to the SpamAssassin page and clicking Disable Spam Box.