AI-Powered Email Security & Spam Filtering
Protect Microsoft 365, Google Workspace, all cloud-hosted email services, and on-premise mail servers with next-generation AI email filtering.
Advanced AI, NLP, and real-time threat intelligence stop phishing, malware, spoofing, and business email compromise before it reaches your inbox.
mx1.openefa.comEmail Security Experts Serving US & International Clients
Processing Thousands of Emails Daily Years of Proven Experience Global Protection
Trusted by Law Firms, Publishing Companies, Insurance Agencies & More
Chipotle Publishing
Phoenix Defence
RD Johnson Law
Esudo Law
Safe and Sound Insurance
Segue Logic LLC
With Love & Co.
...and more
Email is still the most targeted attack vector.
OpenEFA Cloud provides a fully managed, AI-enhanced security layer between the internet and your mail system—ensuring only safe, legitimate messages reach your users.
Dramatically fewer false positives than legacy spam filters
Fully managed platform with instant deployment
Works with all cloud email services (MS 365, Google, Zoho, etc.) and on-premise servers
Explainable filtering decisions with detailed scoring
Traditional spam filters rely on static rules and outdated signatures.
OpenEFA adds a modern AI layer that catches sophisticated attacks others miss.
F1 Accuracy
Precision
Processing Time
False Positives
(Industry avg: 15-25%)Most email security vendors send your messages to third-party cloud AI platforms for analysis—exposing your confidential communications, client relationships, and business intelligence to external systems.
OpenEFA is different. Our proprietary machine learning runs entirely within our controlled infrastructure. Your email data never leaves to train external AI models or feed cloud ML services. Your business relationships, client contacts, and sensitive communications remain private—not shared with big tech AI projects.
Enterprise-grade protection. Zero data exposure.
No appliances, patches, or maintenance. Just point your MX records to mx1.openefa.com and your organization is protected instantly.
Setup time: Under 5 minutes
Every filtered email includes:
You see exactly why a message was blocked or delivered.
Cloud-hosted email services:
On-premise mail servers:
No per-user licensing, no long-term contracts, no vendor lock-in. Predictable flat-rate pricing.
Alternative to: Barracuda, Mimecast, Proofpoint at a fraction of the cost
Most customers choose our cloud-hosted email security service
We handle all server maintenance, updates, and monitoring
Continuous threat intelligence updates protect against emerging attacks
99.9% uptime with redundant infrastructure
Filtering engine improvements deployed automatically
Shared learning across all protected domains
Manage quarantine, whitelist, and train AI at mailguard.openefa.com
This is the fastest, easiest, most powerful version of OpenEFA.
Get Started with CloudFor organizations with regulatory compliance, data residency, or security requirements—we deploy OpenEFA at your location while we handle all management, updates, and monitoring:
Physical hardware deployed at your location for regulatory compliance—fully managed and updated by OpenEFA remotely.
OpenEFA deployed in your private cloud infrastructure—managed remotely by our team:
Isolated systems for maximum security—with on-site or secure remote management:
All deployment options include full management by OpenEFA.
You get the compliance and data residency you need, without the IT overhead. Contact us to discuss on-premise or private deployment options.
A powerful, scalable platform designed for multi-tenant environments
Manage multiple customers from a single interface
Granular permissions and customer isolation
Per-customer filtering policies and learning
Automate provisioning and management
White-label reports for clients
Predictable costs as you grow
OpenEFA delivers a modern, flexible, and transparent alternative to legacy email security gateways.
Interested in a demo, pricing information, or deploying OpenEFA? Let us know below.
OpenEFA provides advanced AI-powered email security, cloud-hosted spam filtering, phishing protection, and threat detection for businesses of all sizes. Our platform integrates with all cloud-hosted email services including Microsoft 365, Google Workspace, Zoho Mail, Rackspace Email, FastMail, and any email provider. We also support all on-premise mail servers including Exchange, Zimbra, Xeams, Postfix, Dovecot, Sendmail, Exim, Qmail, and more. As a modern alternative to legacy email security gateways like Barracuda, Mimecast, and Proofpoint, OpenEFA delivers higher accuracy, better transparency, and flexible deployment options including cloud, on-premise, and private infrastructure. With support for DMARC, SPF, DKIM validation, AI-based filtering, NLP analysis, and real-time threat intelligence, OpenEFA ensures reliable protection against modern email-borne threats including spam, phishing, business email compromise (BEC), malware, and spoofing attacks.