False negatives are spam messages that SpamSieve examined but didn’t think were spam. This option causes SpamSieve to save such messages for later analysis. Clicking the Show button opens the folder containing the saved messages. You can e-mail this folder, along with SpamSieve’s log file, to spamsieve-fn@c-command.com. By looking at the messages that SpamSieve missed, I can improve its algorithms to catch such messages in the future.
Note: Enabling this option will slow down SpamSieve’s processing.
Note: If the False Negatives folder is empty, even after enabling Save false negatives to disk and training SpamSieve with an uncaught spam message, there is probably a setup problem in your mail program. Use the Open Log command to see whether SpamSieve made a prediction for that message.