Whitelist-based service that automatically "cleans" mailboxes of unwanted email multiple times per hour.

Fuzzy-logic software based anti-spam filter for Windows systems.

Provides spam-proof email accounts. Only allows email from addresses in whitelist. Charges a fee for others to reach the customer's mailbox.

POP3 service that blocks spam using sender verification methods.

Automates filter, mailbox, and nickname creation for Eudora Macintosh. Filters on more than 1, 000 spam characteristics.

Protects your entire domain from spam and viruses. No software to install or maintain.

Fully managed service which filters viruses, worms and malicious macros and spam. Firm with offices in UK, France and Sweden.

Spam Manager Professional is a windows based gateway filter for SMTP email servers. This filter uses DNSBL Servers to reject junk or spam mail coming from blacklisted servers.

Anti-Spam SMTP Proxy implementing platform independent email filtering services.

Provides spam and virus filtering services that keep unwanted mail off the network.