Secure email encryption.
Made in Germany.
Encrypting emails is safe and easy with NoSpamProxy Encryption. Ensure legally compliant and GDPR-compliant email communication now!
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BSI-certified*: Email security with NoSpamProxy
Discover NoSpamProxy, the leading email security solution and the first software product worldwide to receive the coveted BSI certificate in accordance with the Accelerated Security Certification (Beschleunigte Sicherheitszertifizierung, BSZ). Find out how NoSpamProxy can protect your company from the latest cyber threats.
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AS4-based Market Communication with NoSpamProxy
The uniform AS4 communication standard is intended to improve the security and data protection of the communication processes between the various market participants. NoSpamProxy offers you a reliable AS4 solution that covers these processes for all market roles in compliance with the rules.
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NoSpamProxy – The ideal addition to Microsoft 365
NoSpamProxy optimises your mail security in Microsoft 365. Use the modular combination of spam and malware protection, email encryption, sending of large files and email disclaimer now.
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Easily send DSGVO-compliant emails
With the convenient S/MIME 4 and PGP-based encryption solution, you can transmit confidential information in encrypted form – simply and securely.
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BSI-certified*: Email security with NoSpamProxy
Discover NoSpamProxy, the leading email security solution and the first software product worldwide to receive the coveted BSI certificate in accordance with the Accelerated Security Certification (Beschleunigte Sicherheitszertifizierung, BSZ). Find out how NoSpamProxy can protect your company from the latest cyber threats.
More information Free trial version
AS4-based Market Communication with NoSpamProxy
The uniform AS4 communication standard is intended to improve the security and data protection of the communication processes between the various market participants. NoSpamProxy offers you a reliable AS4 solution that covers these processes for all market roles in compliance with the rules.
More information
NoSpamProxy – The ideal addition to Microsoft 365
NoSpamProxy optimises your mail security in Microsoft 365. Use the modular combination of spam and malware protection, email encryption, sending of large files and email disclaimer now.
More information

Send GDPR-compliant emails for full confidentiality

With the convenient S/MIME- and PGP-based encryption solution, you can transfer encrypted confidential information reliably, easily and securely.

Manage certificates and keys easily and centrally

NoSpamProxy Encryption offers easy implementation and operation. You can control the encryption directly from Outlook if required.

Icon Security Made in Germany

For guaranteed email security Made in Germany

NoSpamProxy bears the IT Security Made in Germany seal of approval, has stood for security and reliability for more than 15 years and is fully GDPR-compliant.

Also for recipients without their own encryption solution

The PDF Mail function enables the simple and secure sending of emails and documents without any requirements on the recipient.

Email Encryption

Fully GDPR-compliant, for data protection and legal security in your company

S/MIME- and PGP-based email encryption is the basis for data protection and legal security in your company. NoSpamProxy offers full support for the latest encryption methods published in the standard. Older methods are also supported to ensure compatibility. With NoSpamProxy Encryption you communicate securely and easily. NoSpamProxy is the convenient solution for email encryption that enables you to easily encrypt and send GDPR-compliant emails.

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Benefits at a glance

Encrypted transfer of personal data
The first gateway to support S/MIME 4
Fulfils BSI requirement for federal projects
No requirements for recipients
Compliance with all legal demands
No user training required
BSI-certified*
Fulfilment of duty for professional secrets
Award-winning support in German and English

E-Mail Security Champion Professional User Rating

Is email encryption really important?

Yes, it is, as can be seen in many recent surveys. The reasons for this include the growing threat of industrial espionage and automated email screening by secret services. In many industries, encrypted communication with suppliers or external service providers is a prerequisite for placing orders. After all, invoices sent by email are increasingly intercepted and modified by criminals. By encrypting your communication, you protect sensitive data from illegal access. At the same time, you have legally secure proof of documents sent by email. In addition, companies can effectively differentiate themselves by enabling encrypted email communication with customers or clients.

Email Encryption in Microsoft Outlook

As a gateway solution, NoSpamProxy Encryption takes over the central administration of certificates and keys and makes the introduction and operation of your encryption solution easier than ever before. Control your S/MIME encryption or PGP encryption either centrally at the gateway or, if required, very simply with the NoSpamProxy Add-In for Microsoft Outlook. This allows you to encrypt mails directly in Outlook.

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

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„Email encryption is simple, scalable and organisation-capable with NoSpamProxy Encryption. Our solution does not require extensive end-user training and enables GDPR-compliant email communication.”

Stefan Cink, Director Business and Professional Services NoSpamProxy

What makes NoSpamProxy Encryption so powerful?

S/MIME signature and email encryption

S/MIME is the recommended and internationally recognized standard for electronic signature and encryption of emails. NoSpamProxy offers full support for S/MIME 4 and is the only product in its class to meet the newly updated requirements of the Federal Office for Information Security (BSI) for federal projects. Older procedures are also supported to maintain compatibility.

PGP Mail: Pretty Good Privacy

Also for recipients without encryption solution

PDF Mail

In the event that recipients do not have a personal certificate and PGP key, NoSpamProxy Encryption provides a simple workaround: With the PDF Mail function, NoSpamProxy Encryption offers an additional way to send emails and documents securely without making any demands on the recipient. When encrypting emails with NoSpamProxy Encryption, our encryption solution automatically converts the email with all attachments into a password-protected PDF document. The password is automatically sent to the recipient via SMS. Alternatively, the recipient can assign their own password by logging on to the NoSpamProxy Web Portal. All they then need to open the document is a PDF reader.

Central certificate management

De-Mail and NDB connection

Legally compliant and efficient encryption of emails

NoSpamProxy Encryption supports secure and centralised access to the De-Mail system for companies and authorities as well as institutions and public institutions. This means that De-Mails can be sent and received reliably within the existing email systems. NoSpamProxy Encryption features interfaces for the integration of specialised procedures, ECM and email systems. Legally compliant email encryption for companies results in significant cost reductions compared to conventional correspondence with customers and citizens.

Many providers offer additional services, special functions or interfaces for the connection to other procedures only as additional options with costs. NoSpamProxy Encryption includes interfaces to leading trust centers, De-Mail, NdB (formerly DOI) and EDI@Energy. And of course, there are no additional costs that depend on the number of EDI messages exchanged.

Secure transmission between email servers

Intelligent TLS Management

The secure transmission of emails between two email servers using TLS (Transport Layer Security) should be a matter of course by now. However, it still occurs that servers do not or only partially support this important feature. NoSpamProxy offers TLS security with a single mouse click. The administrator secures the receipt of emails in the receive connectors of NoSpamProxy. There, the connection security can be optionally allowed. This means that NoSpamProxy offers the sending server the Start TLS procedure. The sending server can then decide for itself whether it wants to encrypt emails or not.

Free Open Keys key directory

Open Keys

With our free service Open Keys you can easily and quickly check if your communication partners own certificates and communicate encrypted immediately without prior exchange of signed emails. Likewise, you can publish your public key and those of your organisation on Open Keys. Users who are not NoSpamProxy® customers can also use the service and search for public keys automatically via LDAP or Web API at www.openkeys.de.

Complete email security for Microsoft Office 365

„The Level of Trust filter is an excellent idea. It stops known spammers very reliably and ensures that emails from our regular correspondence partners are guaranteed to be delivered.“

Jürgen Lalla, Head of IT at Swiss Life Select

Logo Komatsu

„Immediately after implementation, selected employees were able to send their emails encrypted in accordance with a central policy, without any changes to the way they were used to using their email client.“

Kai Schychowski, General Manager ICT at Komatsu Mining Germany

„In contrast to a classic FTP server, NoSpamProxy Large Files integrates data handling into the familiar email environment of our employees and enables a high level of security.“

Peter Gerfer, IT Systems Engineer at Deutscher Ärzte-Verlag

Are you looking for advice on TLS or S/MIME certificates?

The email certificate management of NoSpamProxy Enryption for S/MIME supports user and domain certificates from any trust center and automatically imports public keys from inbound email signatures. The D-Trust, SwissSign and GlobalSign trust centers are directly integrated for the simple and fast issuing of user certificates. This secure interface between the email gateway and the trust centers reduces the effort for IT administration and offers noticeable cost savings.

If you have any questions regarding TLS encryption and S/MIME encryption, please contact our partner SSL Plus. SSL Plus is a qualified NoSpamProxy partner and can therefore provide you with specific advice on the configuration of certificate management for your NoSpamProxy Encryption installation. This way you receive a certificate solution that fits your company and your NoSpamProxy perfectly.

More information on certificate selection

Buy certificates now

Order gateway certificates and personal certificates now from one of our partners D-Trust, SwissSign, GlobalSign or DigiCert.

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The easiest way to the public keys of your communication partners!

With our free service Open Keys you can easily and quickly check if your communication partners have certificates and you can publish keys yourself. With over 1 million accesses per month and over 1 million available public keys, Open Keys is the best first step to encrypted communication. Large German industrial companies, leading trust centers, the Federal Employment Agency and the German Research Foundation use Open Keys as well as numerous private users.

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Logo Initiative Mittelstand verschlüsselt

The initiative “Mittelstand verschlüsselt!” enables simple, cost-effective and secure email encryption for all companies. You can find more information on our special website (German only). Find out now!

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NoSpamProxy Server.

The comprehensive solution for
security and email encryption.

NoSpamProxy Server is the ideal solution for anyone who wants to ensure your email security on-premises. For comprehensive protection against ransomware, malware and spam, as well as for encrypting emails. Seven times the award for the Professional User Rating of techconsult GmbH, especially in the areas of performance, functionality and usability.

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NoSpamProxy Cloud.

Simple and secure protection
of your email infrastructure.

NoSpamProxy Cloud is the flexible, cloud-based email security gateway for managing your email infrastructure. For uncompromising security with minimal effort for your IT department. With NoSpamProxy Cloud, you are ready to go right away and benefit from intuitive operation, automatic updates and high availability and scalability.

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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 now.

Microsoft 365 Mail Security

Do you have any questions or would you like to make a price request? We are looking forward to hearing from you.

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*NoSpamProxy Server version 14.0.5.62 was used for the certification and the certificate was issued for this version.

Secure email encryption.
Made in Germany.

BSI-certified*: Email security with NoSpamProxy

AS4-based Market Communication with NoSpamProxy

NoSpamProxy – The ideal addition to Microsoft 365