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Spam Filter

No spam.No distraction.Only productive emails.

Conbool MailGuard blocks spam before it reaches your mailboxes. Multi-layered detection, intelligent quarantine, and zero configuration effort.

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Professional Spam Filter for Businesses

Unwanted emails cost your employees valuable working time every day and open doors for cyberattacks. Conbool MailGuard is a cloud-based spam filter specifically designed for the requirements of SMBs and mid-market companies.

Why a professional spam filter is essential

45%
of all emails worldwide are spam
11 min
lost per employee per day due to spam
94%
of all malware is delivered via email
NIS2
requires technical protection measures for email

What sets Conbool MailGuard apart from other spam filters

Not just another spam filter. An intelligent platform that learns, filters, and manages itself.

Multi-layered Detection

Conbool combines Bayesian filters, heuristic analysis, reputation databases (RBL), and machine learning. Every email passes through multiple inspection layers.

Intelligent Quarantine

Suspicious emails land in a clear quarantine. Your employees can decide via digest or self-service.

Ready in 5 Minutes

Change the MX record, done. No hardware, no installation, no complex configuration. MailGuard works as a cloud gateway.

SPF, DKIM & DMARC Included

MailGuard checks every incoming email for valid sender authentication and automatically blocks forged messages.

Customizable Filter Rules

Define rules by domain, sender, content, or user group. Scoring-based thresholds can be fine-tuned.

Made in Germany

All data is processed in Germany. Full GDPR compliance, no dependency on US cloud providers.

Conbool vs. built-in spam protection

Most email providers offer basic spam filtering. Here's where MailGuard goes further.

FeatureStandard (EOP)Conbool MailGuard
Multi-layered analysisBasicBayes + Heuristics + RBL + ML
Quarantine managementLimitedSelf-service + Digest + Admin
DMARC enforcementOptional, manualAutomatically integrated
Reporting & AuditBasic logsDashboard + Export + Alerting
Data processingInternationalGermany (GDPR)

Clean inbox in three steps

1

Change MX record

Route your mail flow through Conbool. One DNS entry is all you need.

2

Configure rules

Use the default configuration or customize thresholds and filter rules individually.

3

Spam is history

MailGuard starts filtering immediately. Your employees only see emails that are truly relevant.

FAQ

How does Conbool MailGuard differ from free spam filters?
Free spam filters usually offer only basic keyword filtering. Conbool MailGuard uses multi-layered analysis with Bayesian filters, heuristic detection, reputation databases, and machine learning. Plus professional quarantine, DMARC integration, and GDPR-compliant processing in Germany.
Does MailGuard work with Microsoft 365?
Yes. Conbool MailGuard operates as an upstream gateway and filters emails before they reach Exchange Online Protection (EOP). Integration is via a simple MX record change.
What is the detection rate?
Conbool MailGuard achieves a spam detection rate of over 99.9% with a false positive rate below 0.001%. Multi-layered analysis ensures reliable results.
What happens to emails detected as spam?
Detected spam is moved to quarantine. Users receive regular quarantine digests and can release messages with one click. Administrators have full control over the quarantine.
Is Conbool MailGuard GDPR-compliant?
Yes. All emails are processed exclusively in German data centers. Conbool does not permanently store email content. Processing complies with GDPR and BSI recommendations.
How quickly is MailGuard ready to use?
Typically under 5 minutes. You only change the MX record for your domain. No software installation and no hardware requirements.

No more spam starting today.

Try Conbool MailGuard free for 30 days. No credit card, no commitment.

Start free trialRequest a demo
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