Future-Proof Your Communications with Cloud Fax APIs

Push your organization forward with developer-friendly fax APIs that seamlessly embed secure, compliant faxing into your applications. The time to modernize is now.

Integrate Anywhere

Retarus Cloud Fax API integrates premium faxing directly into the applications you rely on. EHR, CRM, ERP or any other. Customized or standard.

The Future, Today

Raise the bar with guaranteed uptime, maximum delivery rates, and highly qualified professional services and support staff.

Make it Modern

Use a nimble fax solution to modernize outdated processes. Bring communication out of the past without sacrificing compliance.

The Retarus Advantage

Developer-Friendly

Via modern APIs, extensive documentation, and mock servers

Migration Support

From experts who help you scope your requirements, design a solution, and manage the migration project

Tweak and Customize

Choose between pulling or pushing mechanisms, benefit from customizable webservice and status templates, and more

Customer Ratings and Reviews

“Retarus and Symtrax provided us with a turnkey solution, so that we could immediately test it under real production conditions. Within two days the service was ready to use productively.”
Read Customer Story Jean-Michel Brégeat, Head of Sales, Aigle

“An exceptional and strong services performance proven by many years of nearly flawless delivery of agreed services, processes and KPIs.”
Read full review IT, Banking

“Retarus is the technological leader for electronic enterprise communications. That means that we are excellently advised and equipped to deal with all future technological developments.”
Read Customer Story Willi Geißdörfer, Senior Manager Sales Services, Adidas

“In Retarus we have found a partner with which setting up and operating a scalable, cloud-based desktop SMS, fax and SAP fax solution functions very smoothly.”
Read Customer Story Öner Durmaz, Project Leader and Systems Consultant, Corporate Sector Information Systems and Services – Unified Communication Services, Robert Bosch GmbH

“A+ Product, Reliability, And Service From Retarus”
Read full review IT, Finance

Features

Real-Time Monitoring

Dynamic Cover Pages

Comprehensive Reporting

NeverBusy Technology

Rendering Control

Granular Administration

In addition to detailed in- and outbound reporting, we also provide administrators with live insights into their organization’s faxes as they’re in transmission.

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Create and upload your own cover page templates. Different cover pages can be assigned to departments, user groups, or users. Set a standard cover page or choose one per fax job.

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Keep a detailed overview of in- and outbound faxing across your entire organization.

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Multiple users, departments, or applications sending faxes? Retarus’ own NeverBusy Technology ensures that two faxes are never simultaneously sent to the same recipient. This avoids busy signals, improves delivery rates and ensures smooth processes.

Need a rendering engine built for the most diverse requirements? Ours can easily process various document layouts, fonts, languages, text formats and file types including TXT, HTML, XSLX, DOCX, PDF, image files and many more.

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Your business, your application, your Cloud Fax. Configure integrations, transmissions and documents according to your needs.

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Why Choose Retarus Cloud Fax?

Reliable Infrastructure

Retarus Cloud Fax, powered by the HITRUST e1 certified Fax Backend, is engineered for maximum reliability. Its robust infrastructure includes six data centers worldwide, along with a redundant network infrastructure, connections and carriers.

Security and Compliance

We operate under a comprehensive, annually audited security framework. Our certifications include SOC1, SOC2, ISO27001, HITRUST and PCI DSS. We provide fax solutions in compliance with major regulations including HIPAA, FERPA, and GDPR.

Find out more

Premium Performance

Carrier-grade Ribbon equipment in every data center, multiple Tier 1 premium network carriers, active carrier management, and innovations and expertise from decades of experience ensure high transmission success rates on a global scale.

Reporting and Administration

Our easy-to-use web portal lets IT teams operate and configure services efficiently and precisely. Track the status of individual faxes with in-depth, real-time reporting.

Migration and Implementation

Your designated project manager and team are with you from the first days of scoping to implementation and scaling to production. Custom application integrations are supported by a professional services team or our proven partner network.

Customer Experience

We take customer support seriously. Talk to our experts instead of call centers or chatbots and see why we have a 95% first call resolution rate. Analysts recognize us, customers rate us highly, and many of the world’s largest enterprises rely on us.

Improve Business Processes with Cloud Fax Add-Ons

Optical Character Recognition

Automatically receive faxes as searchable PDF documents to simplify downstream workflows.

Barcode and QR Code Recognizer

Automatically read or print barcodes on faxes, route inbound documents to specific numbers, email addresses or folders based on barcode information.

Archiving

Keep sent and received faxes including metadata in our storage or have them automatically be copied into your own archive.

Fax Auto Reply

Set up automatic, customizable replies to received faxes.

Get in touch

Want to learn more or see our solution in action? Contact us and we will work with you directly or introduce you to one of our trusted partners.

Contact us

Learn more

Check out our documentation center to find technical information and product guides.

Want to Learn More About Retarus Cloud Fax APIs?

API Knowledge Center

Integrate and optimize Retarus Messaging APIs with ease within enterprise environments

Applications and Ecosystems

Discover a world of pre-built connectors and integration blueprints

Documentation Center

Explore features, functionalities, and technical information about Retarus Cloud Fax

Retarus Cloud Fax

Find out what makes Retarus Cloud Fax so excellent

Frequently Asked Questions

Can we test the Cloud Fax API integration?

Of course. Contact us and we’ll scope the requirements together, then set up a PoC that suits your needs. We also provide mock servers if you’d like to test integrations on your own.

Do you have API documentation?

Yes, click here for documentation. If you have any questions afterwards, feel free to reach out.

What about security and compliance?

Our solutions operate under a strict security framework in compliance with regulations such as HIPAA, PCI-DSS, GDPR, with certifications including SOC1, SOC2, and e1-HITRUST.

How can you be sure Cloud Fax APIs will work for us?

After 30 years in the business, we have seen fax migrations in all industries and hundreds of use cases and document types. We always make it work. If you’d like to see an example from your industry, have a look at our case studies.

Where can I find out more?

Visit our Cloud Fax overview page. Read our case studies and analyst reports. Check out our corporate blog and upcoming webinars, and feel free to book a demo. We’re always happy to help.