• Mail passes through multiple layers of filtering before it is accepted by our system

1. Source mail server is validated - most viruses and spambots are blocked with this test
2. Source mail server is checked against Realtime Blackhole Lists
3. Sender email address is validated and checked against the Realtime Blackhole Lists
4. Mail headers are examined for correctness
5. Mail is optionally filtered for objectionable content

• Selectable sensitivity setting – adjust the criteria our filter uses to identify spam
• Hide images in spam – block offensive pictures and bugs used to track your activity
• Insert spam score into message header – works with Microsoft Outlook to give each email a score on the spam scale
• Approved senders list – automatically allow trusted addresses or trusted domains
• Blocked senders list – automatically block messages from spammers