How does MailGuard protect against retroactively manipulated links and attachments?

Incoming URLs are checked in real-time in isolation at the time of click (Time-of-Click-Protection) to also block links that were redirected to a malicious site after delivery. File attachments go through a sandbox environment (detonation) before being released to the end user.

Can the platform stop unintentional data loss (DLP)?

Yes, integrated Data Loss Prevention (DLP) filters automatically analyze outgoing messages for sensitive information such as credit card data, IBANs, or defined company secrets. These emails can be centrally blocked, forwarded to compliance officers, or – in conjunction with SecureMail – automatically encrypted.

How does our IT department maintain control over false positives?

MailGuard offers a multi-tenant governance console with detailed live message tracking. Administrators can granularly set quarantine policies, while end users can safely release harmless emails themselves through regular quarantine reports (digests), which relieves the IT helpdesk.

Does the deep email inspection slow down our communication?

No, the entire engine of Conbool is designed for highest enterprise performance. The complex analyses take place in the millisecond range, so the email flow for business operations remains virtually delay-free.

Can security policies be adapted for different departments?

The ruleset can be segmentated extremely precisely. For example, you can define more restrictive filters and isolated sandbox rules for management or the finance department than for general newsletter or info mailboxes.

Intelligent. Complete. MailGuard.

Email spam filter for companies with proactive phishing protection and malware defense. MailGuard blocks threats directly in the gateway before they reach the inbox.

Start with no obligation Contact us

Intelligent email spamfilter for businesses

Many attacks are detected too late. As an email spam filter for companies, Conbool MailGuard detects spam, phishing and malware directly in the gateway before risks arise in the inbox.

Without MailGuard

Threats reach the inbox
Phishing and malware get through. Damage starts immediately.
Rules require constant maintenance
Attacks change continuously. Filters must be constantly updated.
Without logs risk increases
Audits become harder. GDPR risk rises.
Incidents block the IT team
Response costs time. Important projects stall.

NIS2-konforme E-Mail-Sicherheit

MailGuard erfüllt §30 Abs. 2 Nr. 2 BSIG – Incident Management & Bedrohungserkennung.

NIS2 Compliance im Detail

Frequently Asked Questions about Conbool MailGuard

Why is the standard spam filter of Microsoft 365 or Exchange not sufficient?

Conbool MailGuard closes critical security gaps of standard filters, especially with targeted phishing campaigns, CEO fraud, and zero-day malware. Through cloud sandboxing, modern heuristics, and multi-stage analysis, we intercept threats before they reach the Microsoft ecosystem and thus the inbox.

Ready to secure your company? Let's talk.?

Protect your infrastructure with phishing protection, malware defense, and central security policies.

MailGuard blocks threats before they reach the inbox and strengthens your email security in real time.

No credit card required - 30 days free - Cancel anytime

Spam Filter f\u00fcr Unternehmen Phishing-Schutz entdecken

Intelligent. Complete. MailGuard.

Email spam filter for companies with proactive phishing protection and malware defense. MailGuard blocks threats directly in the gateway before they reach the inbox.

Start with no obligation Contact us

Intelligent email spamfilter for businesses

Many attacks are detected too late. As an email spam filter for companies, Conbool MailGuard detects spam, phishing and malware directly in the gateway before risks arise in the inbox.

Without MailGuard

Threats reach the inbox
Phishing and malware get through. Damage starts immediately.
Rules require constant maintenance
Attacks change continuously. Filters must be constantly updated.
Without logs risk increases
Audits become harder. GDPR risk rises.
Incidents block the IT team
Response costs time. Important projects stall.

NIS2-konforme E-Mail-Sicherheit

MailGuard erfüllt §30 Abs. 2 Nr. 2 BSIG – Incident Management & Bedrohungserkennung.

NIS2 Compliance im Detail

Frequently Asked Questions about Conbool MailGuard

Why is the standard spam filter of Microsoft 365 or Exchange not sufficient?

Ready to secure your company? Let's talk.?

Protect your infrastructure with phishing protection, malware defense, and central security policies.

MailGuard blocks threats before they reach the inbox and strengthens your email security in real time.

No credit card required - 30 days free - Cancel anytime

Spam Filter f\u00fcr Unternehmen Phishing-Schutz entdecken

Detection and filtering intelligence

MailGuard detects spam, phishing and malicious content early and combines phishing email protection with intelligent analysis directly in the email gateway.

Real time detection and defense

Real time detection
Threat protection

Real time analysis Threat detection

Analysis features

Multi stage content analysis with AI and machine learning.
Reputation checks via real time blacklists (RBL) and Geo IP.
Heuristic pattern recognition for early detection.

AI engineHeuristicsRBL

Advanced link filtering

Deep inspection of URLs even when hidden in barcodes or QR codes.

URLs are detected and checked in attachments, barcodes, and QR codes.
Full sanitizing (rewrite) of suspicious links.

https://suspicious-link.com

Spam filter management

AI filter Statistical detection based on learning models.
Custom feedback Individual feedback for training and tuning.
Custom policies Manage your own rules and regex filters professionally.

Rules, Routing and Mail Security Gateway

Intelligent control for inbound and outbound email. Fully customizable for central policies, routing rules, and secure processes in the Mail Security Gateway.

Filter policies and configuration:

Custom rules per domain, user, or group
Control by score, sender, subject, content, attachment type, and more

BLOCKED

DLP policy violation Confidential attachment detected. Outbound delivery blocked.

Optional add on module

Data loss prevention (DLP)

Prevent data exfiltration and protect sensitive information with intelligent filtering and content scanning.

Enterprise infrastructure and security

Certified protection, seamless integration, and full transparency.

Monitoring and audit logs

Live dashboardVisualized spam timeline and mail flow in real time.

End to end audit loggingAudit log and cryptography logging stored tamper proof.

RetentionStandard 90 days retention and export.

Mails processed

128.4k

Encrypted

Spam trend

Integration and compatibility

Seamless integration into your existing system landscape.

Compatibility & Clients

Native support for Microsoft Outlook, Apple Mail, iOS, Android, and all common email clients â€” without additional installations.

OUTLOOKAPPLE MAILMOBILE

Integration & Management

Seamless real-time sync with Microsoft Entra ID, Active Directory, and LDAP. Central control via the web dashboard.

ENTRA IDAD/LDAPSAML SSO

Team members

Manage members of your team.

Invite

Search members

NameEmailRoleJoined

Maximilian M.

m.mueller@example.com

Owner

3.4.2025

Sarah K.

s.krause@firm.com

Owner

20.5.2025

Timo S.

t.schmidt@mail.de

Contact

2.9.2025

Infrastructure, Performance & Deployment

Highly available architecture for maximum reliability.

Infrastructure and architecture

ISO 27001 hostingGeo redundant servers in Germany (Frankfurt and Berlin).
Active active clusterFor maximum resilience and load distribution.

FrankfurtBerlin ISO 27001

Performance and reliability

SLA guarantee99.9% guaranteed system availability.
High performance routingMinimal latency (< 50ms) for email processing.

SLA guarantee

99.9%

Avg. latency

< 50ms

Deployment & Multi-Tenancy

ISO 27001 certified hostingHosting in ISO 27001 certified EU data centers (Germany)
Flexible service packagesCustom service packages per tenant

CLOUD / SAAS

ON-PREM

Support and documentation

Benefit from a broad range of support services

24/7 ticketing

Guaranteed response times around the clock

Phone support

Personal contact through prioritized phone support

Documentation and FAQs

Comprehensive documentation, step by steps, and FAQs

Intelligent email spamfilter for businesses

Without MailGuard

Frequently Asked Questions about Conbool MailGuard

Ready to secure your company? Let's talk.?

Intelligent email spamfilter for businesses

Without MailGuard

Frequently Asked Questions about Conbool MailGuard

Ready to secure your company? Let's talk.?

With MailGuard

Detection and filtering intelligence

Real time detection and defense

Analysis features

Advanced link filtering

Spam filter management

Rules, Routing and Mail Security Gateway

Filter policies and configuration:

Data loss prevention (DLP)

Threat Protection in Detail

Phishing Protection

CEO Fraud Protection

Ransomware Protection

Email Attachment Protection

Spam Filter

Microsoft 365 Security

Enterprise infrastructure and security

Monitoring and audit logs

Integration and compatibility

Infrastructure, Performance & Deployment

Infrastructure and architecture

Performance and reliability

Deployment & Multi-Tenancy

Support and documentation

24/7 ticketing

Phone support

Documentation and FAQs

Protection features

Advanced analysis

Actions and measures: