Whats the difference between this anti-spam program and the spam filters on my email reader?
Think of your computer as being “downstream” in the flow of email delivery. Spam Control processes your email first, before your email is even delivered to your mailbox. If you use a policy that quarantines or automatically deletes spam, your email client will never see these messages because it processes your email after Spam Control. Any spam that slips through Spam Control might be caught by your email client’s anti-spam filters. (If you are using Tag and Deliver then all of your messages will be sent to your mailbox whereupon your email client will run its own spam filters.
Think of your computer as being “downstream” in the flow of email delivery. Spam Control processes your email first, before your email is even delivered to your mailbox. If you use a policy that quarantines or automatically deletes spam, your email client will never see these messages because it processes your email after Spam Control. Any spam that slips through Spam Control might be caught by your email client’s anti-spam filters.