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Cloud Fax Services Our Throughput Rate Increases Your Productivity

Consolidate, digitize, automate – with Retarus Cloud Fax Services, your faxes always reach their destination. Read our white paper to learn how you can cut your investment and process costs up to 70% with Retarus, an enterprise fax provider.

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Cloud Fax Services for Digital Processes

Faxing is an integral part of many business processes. As a tested and standardized technology, faxing is easy to use and can be integrated in almost any system landscape. Faxing is secure and immune to viruses. Faxes can be traced from the time they are sent to the time they are received and are legally binding. And faxing is digital.

Retarus’ innovative cloud fax services help you digitize analog business processes simply and optimize sustainable workflows. Retarus Cloud Fax Services are essential to your migration to All IP and support you in consolidating and simplifying your infrastructure. Once you are connected to the Retarus Enterprise Cloud, you benefit from the scalability you need, maximum reliability and the highest level of security. At the same time, with online fax services your investment- and process-related costs are up to 70% less than those for self-operated fax machines, servers and fax infrastructures.

Tap into Your New Potential with Retarus as Enterprise Fax Provider

Want to digitize and automate incoming orders? Do you need to send hundreds of thousands of delivery orders to florists for Mother’s Day? Or do you have to fax from an application, e.g. life-saving laboratory reports directly to the operating room? With Retarus’ enterprise cloud fax services, your information flows reliably at all times. Anywhere in the world. Incoming and outgoing. With Retarus as your enterprise fax provider, you reach the highest requirements for availability and transaction security, as well as country- and industry-specific regulations for data protection and data security, such as GDPR, HIPAA, and PCI DSS. A cloud fax service offers many possibilities to increase efficiency and reduce costs.

Made in Europe

IT Security Made in Europe

Retarus and Symtrax provided us with a turnkey solution that we could test immediately under real production conditions. We were able to use the solution productively within two days.
Read the full Case Study
Jean-Michel Brégeat

Department Manager, Aigle

Retarus Mail2Fax not only saves us a significant amount of time, but it also helps us respond reliably and quickly to partners and insurance companies.
Read the full Case Study
Stefan Bode

Director of Information Technology, Avis SAP Customer Service Center

14 Advantages of Retarus Cloud Fax Services


Reduce your fax transmission failure rate by up to 10% and reduce the administrative costs involved in manually processing your faxes. Retarus' NeverBusy Technology ensures that multiple faxes are never sent to the same recipient simultaneously. Thanks to this technology, even high volumes of incoming faxes are delivered immediately—no busy lines or capacity bottlenecks.

Scalable and Flexible

Eliminate over- and under-utilization of capacity with our online fax services and API. Regardless of whether you send 1,000 faxes today and one million tomorrow—the Retarus Enterprise Cloud provides you with the exact bandwidth you need at any given point in time without a single fax machine or traditional desktop-fax software in your office.

OCR and Barcode Recognition

Retarus' enterprise fax services enable you to seamlessly integrate faxing into your workflows. Read out information or barcodes from incoming documents with the Retarus OCR and barcode recognition feature and then use customized smart routing options to presort, forward, store, or process the documents automatically according to your rules.

Monitoring and Analysis

Check the status of your fax communications at any time using dashboards and detailed reports in the web-based Retarus Enterprise Administration Services Portal. In real time or in user-defined periods. For both outgoing and incoming faxes.

Security and Compliance

Rely on maximum security. The Retarus Enterprise Cloud, with its global data centers, fulfills the most stringent country and industry-specific requirements for data protection and data security. For example, the GDPR, PCI DSS, or HIPAA.

Long-Term Archiving

Ensure full compliance with industry-specific or statutory regulations. Retarus' long-term archiving helps your fax communications comply with the most stringent data security and integrity requirements.

Worldwide Telephone Number Service

Receive faxes anywhere in the world with local numbers. Retarus provides service and call numbers on all continents that can be managed and assigned easily in the EAS Portal. It is also possible to port existing incoming fax numbers at any time.

Intelligent Routing

Achieve up to 30% more throughput with Retarus' enterprise fax services using our cloud fax API. Active Carrier Management in the Retarus Enterprise Cloud automatically uses the lines and carriers whose line quality and availability best match your fax job. With Retarus you can also send your fax from any application - quickly and reliably.

Global and Available Anytime

Rely on reliable transmission worldwide. The Retarus Enterprise Cloud offers high availability and high capacity, with its own data centers in Europe, Asia, and the USA, providing maximum availability and delivery reliability. 24/7.

Seamless Integration

Whether you use an ERP, a CRM or a legacy system, Microsoft 365, or Google Workspace — thanks to open standards, you can connect Retarus Cloud Fax Services to almost any business or cloud application. For example, via RESTful-API web service or via standard interfaces and protocols such as SMTP, SFTP and HTTPS.

OPEX instead of CAPEX

Reduce your investment and process costs. Retarus lets you massively reduce or completely eliminate costs for telephone and fax infrastructures, fax servers, software, updates, administration, and maintenance. Retarus billing models (flat rate or pay-per-use) use fixed batch and page pricing, regardless of the duration of transmission.


Ensure highly secure online faxing communications. Connection to the Retarus Enterprise Cloud is exclusively via encrypted connections (TLS, VPN). The Retarus fax services will also sign and encrypt incoming fax documents for you upon request—depending on the file type per AES 256-bit, PGP, or X.509.

Enterprise-Level SLAs

It doesn't matter if you are an international enterprise, a mid-sized company, or a startup. Choose the service level agreement that best meets your needs in terms of quality, support, and response time. We offer customized SLAs to guarantee special requirements, for example, the exclusive processing of your data in a special Retarus data center.

Service and Support

Experience first-class support built on our expertise. The Retarus Service and Support Team is here to help you solve problems, answer your questions, or help you find the right solution for your needs. Anywhere in the world. You can even be assigned a personal service manager upon request.

Which Cloud Fax Service Meets Your Requirements?

Fax Inbound Services

Fax Outbound Services

Connect with an Expert.

Do you have any questions about enterprise fax services? Request more information now or test Retarus Cloud Fax Services at no obligation. We look forward to hearing from you.