Axway MailGate SC
Strenghts: Full feature set with secure file sharing and secure mail. Weaknesses: Lack of pre-loaded compliance policy templates.
Barracuda Spam & Virus Firewall
Strengths: Full virus and spam protection for inbound and outbound email. Weaknesses: Web-based management GUI is slightly confusing to use.
Cisco Email Security Appliance
Strengths: Easy to deploy and manage with many policy templates out of the box. Weaknesses: None that we found.
Clearswift SECURE Email Gateway
Strengths: Full featured and easy to use. Weaknesses: None that we found.
DataMotion SecureMail Gateway
Strengths: Full email encryption that is transparent to end-users. Weaknesses: Can be quite expensive as a recurring cost.
Echoworx Encrypted Mail Gateway
Strengths: Seamless cloud-based email encryption at a reasonable cost. Weaknesses: Documentation could have been more complete.
Strengths: Powerful and versatile feature set; IBE encryption hosted entirely on-device. Weaknesses: Complicated configuration.
Halon Security Virtual Spam Prevention (VSP)
Strengths: High performance, beautiful administration interface and powerful extensibility via API and scripting. Weaknesses: Advanced functionality requires learning proprietary scripting language.
McAfee Email Protection
Strengths: Numerous pre-compiled compliance dictionaries, easy encryption, simple yet powerful rules-based mail flow. Weaknesses: Does not officially support all modern browsers, and that’s a stretch.
Trend Micro InterScan Messaging Security
Strengths: Very easy content filtering. Weaknesses: Poor documentation, difficult-to-reach support, overly complicated encryption.
WatchGuard Technologies XCS 570
Strengths: Easy deployment, central management, comprehensive filtering and user-friendly encryption. Weaknesses: SecureEmail is essentially a hosted solution, which may not be appropriate for users with more stringent security requirements.