Multi-layered detection
Spam, phishing, and malware are caught by combining several independent engines, not a static rule set that goes stale the moment attackers change tactics.
Antispam and anti-phishing for cPanelStop phishing before it reaches the inbox
Clisec inspects every inbound email at the SMTP layer and stops targeted phishing, business email compromise (BEC), spam, and malware across your entire cPanel server. No MX changes, no per-account setup.
15 days free · No credit card
Trusted by hosting providers
Why Clisec
Built for hosting providers protecting mail at scale
One activation protects the entire server, with every mail account on it. When a client needs its own rules, you set them per domain without affecting anyone else.
Self-service for your clients
Clients manage their own safe and block lists, and release their own false positives from the panel. No tickets for your support team.
Authentication verified on every message
SPF, DKIM, DMARC, and TLS are validated inline, during the SMTP session. Mail that fails authentication never reaches your clients' inboxes.
Measurable accuracy,
email by email
Several independent engines inspect every email before it is delivered.
0.0%
Phishing, spam, and malware detection rate
0.0M
Emails analyzed every hour
The market today
The same phishing email, three different outcomes
What happens to a malicious email depending on how the receiving cPanel server is protected, and what each approach means for your operation.
What you get
Native filtercPanel/WHM's SpamAssassinReaches the inbox
Cloud gatewayFiltering happens off your serverDetours your mail
ClisecProtection on your own serverBlocked on your server
Catches targeted phishing and BEC fraudNoYesYes
Activates without changing MX recordsYesNoYes
Your mail stays off third-party infrastructureYesNoYes
A record of every filtering decisionNoYesYes
Clients release their own false positivesNoYesYes
Pricing modelIncluded with cPanelPer mailbox: grows with every clientFlat rate per server
The solution
Anti-spam and anti-phishing built for cPanel
Clisec stops threats before they reach the inbox and gives your technical team back control over what enters the server.
Every email, analyzed before delivery
Clisec evaluates sender reputation, content, links, and attachments as the message arrives. Threats are blocked at the SMTP layer, before they ever touch the inbox.
- IP and domain reputation
- Behavioral phishing detection
- Link and attachment analysis
Your entire server protected with a single activation
From minute one, Clisec protects the entire server, however many mail accounts it hosts. No per-account setup and no MX record changes.
- The whole server, no account limits
- No MX record changes
- Activation in minutes
Every filtering decision, in plain sight
Your team knows exactly what was blocked, why, and when, through indexed logs, full SMTP transcripts, and policies per server, domain, or tenant.
- Real-time logs
- Explained decisions
- Granular policies
How it works
Three layers check every email before delivery
As the message arrives over SMTP, Clisec inspects it piece by piece: who sent it, where its links lead, and what it carries attached.
Anti-spamWho sent it?
IP and domain reputation, plus SPF, DKIM, and DMARC authentication of the sender.
Anti-phishingWhere does it lead?
Links, landing pages, and impersonation signals in the content.
Anti-malwareWhat is attached?
Every attachment analyzed before it reaches the inbox.
Platform
Your entire mail operation in one dashboard
Monitor servers, review threats, and adjust policies from one place, with the context your team needs to decide fast.
Real-time monitoring
Server health, mail volume, and threat activity, always up to date.
Per-server viewInstant alerts
Centralized policies
Set rules per server, domain, or tenant from a single interface.
Multi-tenantGranular rules
Logs & traceability
Advanced event search, filtering decisions, and full SMTP transcripts.
Full-text searchExportable
FAQ
Frequently asked questions
What hosting teams usually ask us before activating Clisec.
ClisecQuick answers
Pick a question
What is Clisec?
Clisec is an inbound email security solution for cPanel/WHM servers. It inspects every message at the SMTP layer and blocks targeted phishing, business email compromise (BEC), spam, and malware before it reaches the inbox. A single activation protects the entire server, with every mail account on it, and no MX record changes.
How is it different from SpamAssassin or a cloud gateway?
cPanel's native filter relies on generic rules you have to tune by hand, and it treats targeted phishing the same as bulk spam. Cloud gateways force you to redirect every domain's MX records and bill per mailbox. Clisec filters on your own server, detects phishing and BEC, and charges a flat rate per server, with no account limits.
What do I need to run Clisec?
A cPanel/WHM server running Linux. Clisec is lightweight, works at the SMTP layer, and fits into your existing mail infrastructure without straining server resources.
How do I get started?
Book a demo with our team: we review your server and mail volume, and show you Clisec protecting your own server. If you'd rather start right away, choose a plan on the pricing page; protection activates as soon as your payment is approved.
How long does installation take?
Usually under five minutes, with no downtime. When you sign up you receive the installation instructions and documentation, and our team is on hand if you need help.
How is it billed?
A flat rate per server, billed monthly or annually. Every plan protects the entire server with no account limits, so the price does not grow as you add clients.