🛡️ Email Security
Phishing, CEO fraud, fake invoices, booby-trapped attachments: most cyberattacks start with an email. Klytic MTA analyzes every incoming message with over 40 specialized detectors, allowing only safe content to pass through.
The Email Journey
🌐 Internet
↓
🛡️ Klytic MTA
authentication · reputation · content · attachments
↓
✅ Inbox
🚫 Encrypted Quarantine
Scammers are no longer content with just sending spam. They impersonate your bank, your supplier, or even your executive.
Fake login sites, brand impersonation, lookalike domains, booby-trapped QR codes.
A fake executive or supplier requests an urgent transfer or a change of bank details.
Fake invoices, fake refunds, cryptocurrency scams, or phone recall scams.
Viruses, Office macros, malicious PDFs and HTML files, removed before reaching the user.
Every email goes through multiple layers of analysis. Signals are cross-referenced to decide: deliver, quarantine, or reject.
SPF, DKIM, and DMARC verification, server and domain reputation, domain age, blacklists.
Analysis of links, content, known scam scenarios, and anomalies compared to sender habits.
Antivirus, inspection of macros, PDFs, HTML files, and QR codes contained in images.
Links can be re-analyzed when the user clicks: a site trapped after delivery is still blocked.
Dangerous messages are isolated and encrypted. Secure release with one click if needed.
Control of SPF, DKIM, and DMARC configuration for your domains, with alerts and correction advice.
DKIM signing of your emails, even if your current messaging system doesn't do it, and S/MIME for sensitive exchanges: better deliverability, less impersonation.
A short delay before sending allows you to recall an email sent to the wrong recipient.
Newsletters and promotions are recognized and can be categorized separately.
Option: an SMS notifies you when an important sender emails you.
User reports improve filtering and reduce false positives.
Every decision is explained. CIS / NIST compliant logs, exportable to your SIEM.
Klytic MTA is available in two offerings. Advanced includes all Essential features.
Essential: the inbox is protected from common threats, booby-trapped attachments, and hasty sends.
Advanced: all Essential features, plus financial fraud, click protection, and management.
Filter Modules
Essential
Basic Protection
Advanced
All Essential +
Authentication and Reputation
DKIM, SPF, and MX Control
✓
✓
DMARC verification, including for forwarded emails (ARC)
✓
✓
Server and domain reputation: blacklists, PTR, domain age, BIMI
✓
✓
Targeted deferral of unknown senders (intelligent greylisting)
✓
✓
Common Threats
Antispam, antivirus, and encrypted quarantine
✓
✓
Anti-phishing, brand impersonation, QR codes
✓
✓
Lookalike domains and display name impersonation
✓
✓
Office macros and booby-trapped PDFs
✓
✓
Dangerous attachments removed, with an informational message
✓
✓
Secure quarantine release and notifications
✓
✓
Sending
DKIM signing of outgoing emails, even if your messaging system doesn't do it
✓
✓
Recall before sending a message
✓
✓
S/MIME for sensitive exchanges
✓
✓
Filter Intelligence
Shared learning across all instances
✓
✓
AI arbitration of ambiguous messages
✓
✓
Signal correlation and false positive reduction
✓
✓
Detection of campaigns and unusual sender behavior
✓
✓
Newsletter and promotion sorting
✓
✓
Personalization
Whitelists and blacklists specific to each user
✓
✓
Modules activatable and adjustable per domain
✓
✓
Five-level policies: network, sender, trusted entities, business context, user
✓
✓
Confidentiality and Transparency
No message storage in normal operation
✓
✓
Every decision explained: score and reason in headers
✓
✓
Financial Fraud
CEO fraud
—
✓
Fake invoices, fake transfers, crypto, refunds, financing, phone calls
—
✓
Click Protection and Advanced Attachments
Links re-analyzed at the time of click
—
✓
Booby-trapped HTML files and hidden text in images
—
✓
Management
DMARC Console: reports, alerts, and correction paths
—
✓
CIS / NIST logs, exportable to your SIEM
—
✓
Optional
SMS alert when an important sender emails you
Option
Option
S/MIME certificate provision
Option
Option
✓ included · — not included · Option: extra, on both offers
In normal operation, Klytic MTA analyzes and delivers your messages without storing them. An email is only kept if the destination server is unavailable or if it is dangerous (quarantine): it is then encrypted (AES-256-GCM) and temporarily stored, until its delivery or the expiration of the deadline.
✅ Compatible with Klytic Mail, Microsoft 365, Google Workspace, Exchange, and any mail server
✅ Deployable in our cloud, on a dedicated instance, or on-premise
✅ Quick setup: simply modify your domain's MX record
Yes. Klytic MTA sits in front of your current email system, whatever it may be. You keep your tools and add enhanced protection.
It's in quarantine, not lost. It can be released with one click, and the system takes this into account for subsequent messages.
No. Analysis is automatic, and your messages are not stored in normal operation. Only technical data (score, reason for decision) is kept for statistics.
Generally 24 to 48 hours. We prepare the configuration, you modify your domain's MX record (or we do it for you).
30-day free trial, without changing your email system.
Activate my protection
