Many mail hosts offer SpamAssassin or a similar filter. Make sure the filter is set not to add **Junk**, [Spam], or another tag to the message’s subject. Also, try to configure the filter not to move the messages out of the inbox. It is actually good if you can leave the filter on, but set so that it only tags the message’s headers (e.g. by adding X-Spam-Status and X-Spam-Report headers). This will allow SpamSieve to incorporate the work that the server filter has done into its analysis.