--- title: DeepFilter Email Security Reviews meta_title: 'DeepFilter Email Security Reviews 2026: Details, Pricing, & Features | G2' meta_description: Filter reviews by the users' company size, role or industry to find out how DeepFilter Email Security works for a business like yours. aggregate_rating: rating_value: 5.0 review_count: 1 scale: '5' date_modified: '2026-09-22' parent_category: name: Email Security url: https://www.g2.com/categories/email-security --- # DeepFilter Email Security Reviews **Vendor:** FZM Bilgi Teknolojileri A.Ş. **Category:** [Secure Email Gateway Software](https://www.g2.com/categories/secure-email-gateway) **Average Rating:** 5.0/5.0 **Total Reviews:** 1 ## About DeepFilter Email Security DeepFilter Email Security is an AI-assisted secure email gateway (SEG) that runs entirely on your own servers. It sits in front of your existing mail infrastructure — Microsoft 365, Exchange, Google Workspace, Zimbra or Postfix — and scans inbound and outbound mail before delivery, quarantining phishing, business email compromise, ransomware and malicious attachments. Its defining property is data sovereignty: routine email traffic and message content never leave your organization's boundary, and there are no third-party cloud API calls. The AI model runs on your server, not in a vendor cloud. This makes DeepFilter a fit for regulated sectors, public institutions and any organization whose compliance program (GDPR, KVKK and similar) makes third-party cloud inspection of email content difficult. How it works: every message passes four stages — pre-analysis, deep inspection, evaluation and decision — across seven detection layers: SPF/DKIM authentication, blocklists (RBL/URIBL), statistical classification, an on-premise AI model, similarity analysis for near-duplicate and image-based campaigns, antivirus, and phishing/impersonation detection. The layers combine into a single trust score, and for every rule that fires the console shows what it is, why it triggered and how much it contributed — 400+ documented rules with explainable, per-rule scoring. Key capabilities: • Fully on-premise deployment on Rocky Linux 9 via signed RPM packages • Regional threat-intelligence packs (the Türkiye pack is live: national cyber-security authority feed, signed and integrity-verified) • Collective intelligence — a signature learned on one deployment propagates encrypted across the network without sharing email data • Optional DLP module detecting region-specific data patterns (IBAN, national ID, card numbers) in outbound mail • Quarantine management, allow/block lists, reporting and an end-user portal • Management console and end-user portal in English and Turkish Measured performance (vendor's own measurement, not a third-party benchmark): the AI model is trained on 200,000+ emails and reaches 99.44% precision and 94.65% recall, with a false-positive rate below 0.1%. Licensing is based on scanned messages per day — not per mailbox or per seat — starting from 50 EUR + VAT per month for 1,000 messages/day. Public sector, education and non-profit organizations have separate pricing. Evaluation is a free proof of concept, installed and run end-to-end by the DeepFilter team on your own infrastructure. DeepFilter is developed by FZM Bilgi Teknolojileri A.Ş., which holds an ISO/IEC 27001:2022 information security management system certificate (no. IFC-I-08-26-2987, accredited by TÜRKAK under the IAF MLA). The certified scope covers the development, delivery and support of email security software. The certificate applies to the management system, not to the product. Note: unrelated to DeepFilterNet, an open-source speech noise-suppression project. ## DeepFilter Email Security Reviews ### 1. Stress-Free Email Security with Minimal Maintenance **Rating:** 5.0/5.0 stars **Reviewed by:** Serhat T. | Company Manager, Small-Business (50 or fewer emp.) **Validated Reviewer:** Validated through LinkedIn **Source: Organic:** Organic review. This review was written entirely without invitation or incentive from G2, a seller, or an affiliate. **Reviewed Date:** August 27, 2026 **What do you like best about DeepFilter Email Security?** I really appreciate DeepFilter Email Security for its high catch rate, which means email security isn't something I have to think about day to day, keeping my support queue quiet. The ease of setup is fantastic since onboarding a new customer domain is just a routine step without requiring long tuning phases. I also like how adding domains doesn't turn into a project every time. The dashboard and reporting are clear and helpful, allowing me to quickly find answers for customers in minutes instead of digging through logs when a message didn't arrive. It fits well with our infrastructure, sitting at the MTA level alongside the rest of our hosting setup. **What do you dislike about DeepFilter Email Security?** Nothing significant so far. I don't have a real complaint to point at — it has handled our volume without becoming a daily maintenance job. The honest caveat is that our setup is fairly standard multi-domain hosting, so I haven't pushed it into more unusual configurations where limits might show up. **What problems is DeepFilter Email Security solving and how is that benefiting you?** DeepFilter Email Security keeps spam and phishing out, reducing support loads and ensuring customer satisfaction without daily maintenance. It offers a straightforward setup, eases onboarding with minimal effort, and clear reporting helps quickly resolve customer queries. - [View DeepFilter Email Security pricing details and edition comparison](https://www.g2.com/products/deepfilter-email-security/reviews?section=pricing&secure%5Bexpires_at%5D=2026-10-04+02%3A44%3A55+-0500&secure%5Bsession_id%5D=80d74761-5f80-4baa-a6c5-38d927bb9ad1&secure%5Btoken%5D=d55d6c4cafd1dd2db899418e52eda3b7493abd10c8069adb1c252f8583e42011&format=llm_user) ## DeepFilter Email Security Features **Additional Functionality** - Phishing Protection - Threat Response - Domain Check - Security Auditing - AI/Machine Learning - Third-Party Integrations - AI Copilot - Reporting/Analytics - Anomaly/Malware Detection - SURLB/URIBL Filtering - Activity Dashboard - Scheduled/Automated Reports - For MSPs - Whitelisting/Blacklisting - Fraud Detection - Spam Blocker - Spam Quarantine - API - Data Leak Prevention - Encryption - Audit Trail - Real-Time Monitoring - Spam Analysis - Policy Management - Alerts/Escalation - Email Management - Vulnerability Scanning - Generative AI - Threat Protection - Email Attachment Protection - Email Filtering - Two-Factor Authentication **Functionality** - Anti-Spam - Anti-Malware - Anti-Phishing - SURLB/URIBL Filtering - Quarantine - Outbound Email Monitoring - Advanced Threat Intelligence/Protection - Archiving - Reporting - On-prem deployment - Email Attachment Protection - Phishing Protection - Single Sign On - Email Monitoring - Real-Time Monitoring **Agentic AI - Secure Email Gateway** - Proactive Assistance **Additional Functionality** - Activity Dashboard - Audit Trail - Allow/Block List - Generative AI - Vulnerability Scanning - Active Directory Integration - Threat Response - Search - Intrusion Detection System - Compliance Management - Spam Blocker - Encryption - Data Verification - Audit Management - Alerts/Escalation - Policy Management - Customizable Reports - Archiving & Retention - Data Synchronization - Activity Tracking - Microsoft Outlook Integration - SSL Security - Secure Login - Third-Party Integrations - Spam Detection - Real-Time Notifications - Scheduled/Automated Reports - Email Tracking - Fraud Detection - Event Logs - Data Retention Management - Backup and Recovery - Threat Intelligence - Whitelisting/Blacklisting - Data Import/Export - Two-Factor Authentication - Reporting & Statistics - Anti Virus - Data Loss Prevention - Risk Alerts - Access Controls/Permissions - Password Management - AI Copilot - Authentication ## Top DeepFilter Email Security Alternatives - [Paubox](https://www.g2.com/products/paubox/reviews) - 4.9/5.0 (649 reviews) - [Proofpoint Core Email Protection](https://www.g2.com/products/proofpoint-core-email-protection/reviews) - 4.6/5.0 (615 reviews) - [Virtru Email Encryption](https://www.g2.com/products/virtru-email-encryption/reviews) - 4.4/5.0 (432 reviews)