NoSpamProxy Server – the email security gateway for maximum data sovereignty
With the on-premises NoSpamProxy Server solution, you can protect your email communications directly within your own infrastructure. This powerful email security gateway provides reliable protection against spam, malware, and phishing, while also enabling secure email encryption, the sending of large files, and the flexible creation of email disclaimers. It gives you full control over your data, made in Germany.
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NoSpamProxy – The Perfect Companion to Microsoft 365
With NoSpamProxy, you can optimize your email security in Microsoft 365. Take advantage of the modular combination of spam and malware protection, email encryption, large file sharing, and email disclaimers today.
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NoSpamProxy Server – das Email Security Gateway für maximale Datenhoheit
Mit der On-Premises-Lösung NoSpamProxy Server schützen Sie Ihre E-Mail-Kommunikation direkt in Ihrer eigenen Infrastruktur. Das leistungsstarke Email Security Gateway schützt zuverlässig vor Spam, Malware und Phishing und ermöglicht zugleich die sichere E-Mail-Verschlüsselung, den Versand großer Dateien sowie die flexible Erstellung von E-Mail-Disclaimern. Es bietet Ihnen volle Datenhoheit – made in Germany.
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NoSpamProxy – Die ideale Ergänzung zu Microsoft 365
Mit NoSpamProxy optimieren Sie Ihre Mail Security in Microsoft 365. Nutzen Sie jetzt die modulare Kombination von Spam- und Malwareschutz, E-Mail-Verschlüsselung, Versand großer Dateien und E-Mail-Disclaimer.
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Full control over your email communications

Host your mail gateway entirely on your own infrastructure and maintain control over sensitive company data, policies, and security processes at all times.

Seamless integration into existing systems

Customize NoSpamProxy to meet your specific needs and seamlessly integrate the solution into existing systems, processes, and compliance requirements.

No compromises on features

NoSpamProxy Server offers the same range of features as NoSpamProxy Cloud. You benefit from full feature parity, with the freedom to choose your operating model and maximum configuration options.

Icon Security Made in Germany

Email Security Made in Germany

NoSpamProxy bears the “IT Security Made in Germany” seal of quality and has stood for reliability and expertise for over 20 years. It meets legal requirements and is GDPR-compliant.

Email Security Gateway for Businesses

Name: NoSpamProxy Server – Email Security Gateway for Businesses
Brand: NoSpamProxy Cloud

On-premises. For the most demanding data protection and compliance requirements.

Email is the most important communication channel in businesses, and at the same time one of the most common entry points for cyberattacks. With NoSpamProxy Server, you can reliably protect your email communications against spam, malware, and phishing, while also benefiting from email encryption, large file transfers, disclaimers, and DMARC reporting and monitoring.

As a powerful email security gateway, NoSpamProxy Server can be run on your own server and flexibly integrated into existing infrastructures. Thanks to full feature parity with NoSpamProxy Cloud, you decide whether to run NoSpamProxy on-premises or as a cloud service, without any functional limitations. In both cases, you benefit from a multi-award-winning email security solution made in Germany.

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Benefits at a glance

A powerful solution for businesses
Operation within the company’s own infrastructure
Full control over data
Meeting compliance requirements
Feature parity with NoSpamProxy Cloud
A multi-award-winning solution
Award-winning support

E-Mail Security Champion Professional User Rating

„With Net at Work, we have a partner that meets all our requirements for a reliable and comprehensive email solution. NoSpamProxy is also easy to manage, even for a company of our size, which significantly reduces the workload on our IT team.”

Markus Bitter, Head of the Collaboration Software Unit at Essen University Hospital

Olymp

„After a short break-in phase at the beginning, we quickly had peace of mind and NoSpamProxy has been doing what it is supposed to do ever since: reliably protect us from cyber threats and spam in the background. This is our idea of perfect mail security.”

Keven Kanet, Head of IT Infrastructure, OLYMP Bezner KG

„Although Microsoft 365 comes with its own security solutions, we route all traffic via our NoSpamProxy as a second, central protection mechanism. We rely on the combination of both systems for greater security.”

Marco Riemer, Head of Cloud Services at hagebau IT GmbH

NoSpamProxy Protection

Reliably block spam and malware

Detailed assessment of sender and recipient reputation
Optimize your email security with over 20 different checks, including SPF, DKIM, and DMARC.
Smart Attachment and URL Management
Use URL Safeguard to block malicious links in emails and attachments, or convert them into harmless PDF files.
Guaranteed security for your business
Protect your business from malware with effective URL management, CxO Fraud Detection, our Core Antispam Engine, and the Integrated Malware Scanner. The new AI-based 32Guards also evaluates the metadata of attachments and URLs, providing additional protection against cyberattacks.

NoSpamProxy Encryption

Secure Email Encryption

GDPR-compliant through S/MIME and PGP
Ensure legal compliance and confidentiality through reliable email encryption, while guaranteeing full GDPR compliance. NoSpamProxy Encryption is the first provider worldwide to support the S/MIME 4.0 standard.
Send password-protected PDF files
Use PDF Mail to send your emails and documents to recipients who don’t have S/MIME certificates or PGP keys, but still securely.
Centralized Certificate Management
NoSpamProxy Encryption centralizes and automates certificate management and procurement. Choose from one of the five reputable certificate providers that can be integrated with NoSpamProxy.

Over 6,000 companies entrust the security of their Email communication to NoSpamProxy.

View references

NoSpamProxy Large Files

Send large files via email

Send large files
Send large files directly from your email client without any disruption. SSL-encrypted for optimal security.
Streamline your infrastructure
Streamline your IT infrastructure, save on bandwidth, and reduce your operating costs.
Reporting
Using reporting features, you can, for example, see which recipients of an email campaign downloaded the file.

NoSpamProxy Disclaimer

Create email signatures easily

Design with ease, no technical knowledge required
Create and customize email disclaimers for campaigns, trade shows, or products with ease and flexibility.
Greater legal certainty
Automatically comply with company policies in the disclaimer and maintain a consistent corporate identity.
Long-term relief for your IT department
Anyone in the company can manage your email disclaimers, and your IT team can use the time saved to work on other projects.

The package for full Email Security

All four NoSpamProxy modules in one package: With NospamProxy Suite you get all the features you need for reliable protection against malware, ransomware and spam, secure Email encryption, easy sending of large files and effortless management of Email disclaimers. Especially secure, especially affordable. By purchasing NoSpamProxy Suite you benefit from a significantly lower price compared to purchasing the four individual modules.

Full email security also in Microsoft 365

Optimize your email security in Microsoft 365 with NoSpamProxy. Use the modular combination of spam and malware protection, email encryption, large file sending and email disclaimer management now.

Microsoft 365 Mail Security

„Many companies want maximum control over their email security without having to sacrifice modern features. That’s exactly what NoSpamProxy Server offers. Thanks to full feature parity with NoSpamProxy Cloud, our customers can choose the operating model that best fits their security, compliance, and infrastructure requirements, while always benefiting from the same powerful email security solution.“

Stefan Cink, Director Business and Professional Services NoSpamProxy

NoSpamProxy – the best email security solution, also in the cloud.

NoSpamProxy Cloud is a flexible, cloud-based email security gateway designed to help you manage your email infrastructure. Simple and secure, delivering uncompromising security with minimal effort for your IT department. With NoSpamProxy Cloud, you can get started right away and enjoy intuitive operation, automatic updates, and high availability and scalability.

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Join the NoSpamProxy community

At NoSpamProxy, we are passionate about making email communication even more secure and easier to use. Active communication with and among our customers is particularly important to us. The NoSpamProxy Community offers a unique opportunity to connect with other NoSpamProxy users, ask questions, get tips, and provide feedback. We analyze use cases, provide assistance, and discuss your suggestions.

Together with the other members of the NoSpamProxy Community and the collective intelligence of all active NoSpamProxy instances, you help further develop NoSpamProxy. Your knowledge and experience matter, so become part of the strong NoSpamProxy Community!

Join the community

Do you have any questions or would you like to request a quote?
We look forward to hearing from you.

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NoSpamProxy Server FAQ – Frequently Asked Questions

How does email security work in the cloud?

Cloud-based email security protects digital communications before messages reach the actual mail server or Microsoft 365. Incoming and outgoing emails are routed through a cloud-based security gateway, analyzed there, and delivered only after passing the checks.

Modern cloud email security solutions like NoSpamProxy Cloud use multi-layered verification mechanisms such as spam filters, malware scanning, sandbox analysis, URL checks, and authentication methods like SPF, DKIM, and DMARC. Threats such as phishing, ransomware, or Business Email Compromise are thus detected and blocked early on. Companies benefit from high security without the need for their own hardware, automatic updates, and rapid scalability.

Who is NoSpamProxy Server suitable for?

NoSpamProxy Server is ideal for businesses, government agencies, and organizations that want to manage their email security entirely on-premises. The solution provides reliable protection against spam, malware, and ransomware, enables centralized email encryption with S/MIME and PGP, and offers additional features such as secure sending of large files and management of email disclaimers. Companies with high requirements for data protection, compliance, and customization options benefit particularly from a local installation.

What security measures does NoSpamProxy Server offer against phishing and ransomware?

NoSpamProxy relies on multi-layered protection mechanisms to reliably detect phishing, ransomware, and other email-based attacks. Incoming messages are scanned using advanced spam filters, malware scanners, and heuristic analysis. The 32Guards metadata service helps quickly identify threat patterns and respond to cyberattacks.

NoSpamProxy analyzes suspicious attachments and links to identify malicious content early on. Authentication methods such as SPF, DKIM, DMARC, and ARC help detect forged sender addresses and prevent business email compromise. The combination of various verification methods creates multi-layered protection that effectively defends against both known and new threats.

Kann NoSpamProxy Server zusammen mit Microsoft 365 eingesetzt werden?

Ja. NoSpamProxy Server lässt sich als zusätzliche Sicherheitsebene in bestehende Microsoft-365-Umgebungen integrieren. Während Microsoft Defender und Exchange Online Protection grundlegende Schutzfunktionen bereitstellen, ergänzt NoSpamProxy diese um erweiterte Sicherheitsmechanismen, zentrale Zertifikatsverwaltung und sichere S/MIME-Verschlüsselung. Dadurch profitieren Unternehmen von einem mehrschichtigen Sicherheitskonzept für ihre E-Mail-Kommunikation.

How does NoSpamProxy Server differ from the cloud version?

The key difference between NoSpamProxy Cloud and the on-premises version lies in the operating model. While the cloud version is operated as a service and does not require any dedicated server infrastructure, the on-premises solution is installed and managed in the customer’s own data center.

Both versions offer the same features for spam and malware protection, email encryption, and secure file transfer. The cloud version is particularly suitable for companies using Microsoft 365 or with limited IT resources. The on-premises version, on the other hand, offers maximum control over systems and data as well as deep integration into existing IT structures.

NoSpamProxy Server – the email security gateway for maximum data sovereignty

NoSpamProxy – The Perfect Companion to Microsoft 365

NoSpamProxy Server – das Email Security Gateway für maximale Datenhoheit

NoSpamProxy – Die ideale Ergänzung zu Microsoft 365