What are some alternatives?
When comparing Spamihilator and Symantec Email Security.cloud, you can also consider the following products
Mailwasher - Over 8 million people use MailWasher as their spam filter
Alert Logic Threat Manager - Alert Logic Threat Manager is a cloud-based managed intrusion detection and vulnerability assessment solution.
Spamfence.net - Professional e-mail security free for private use: With Spamfence.
Sophos UTM - Sophos UTM integrates complete security software within a single appliance.
Spam Reader - Spam Reader is a free anti-spam add-on for Microsoft Outlook.
Barracuda Email Security Gateway - Barracuda's Email Security Gateway is a powerful antivirus filter specifically designed to identify and eliminate email-borne threats, stopping hazards before they reach the network.