Native Fax APIs and Gateways for Cloud Fax That Solve Complex Challenges
Integrate Cloud Fax into your business using APIs, gateway or FTP. Consolidate and simplify fax communications across your entire organization.
Familiar, Open Standards
Fully Customizable
Rely on the Experts
You know your business, we know fax. Our experts help you scope your requirements and implement the right solution without disrupting operations.
Customer Ratings and Reviews
“We came to the conclusion that we need a purely European supplier. Turned out, Retarus was the best. Quality of Service, EU-based. We only use Retarus. You beat 'em all!”
Read customer story Brian Schau, Head of Development, twoday A/S
“We attach great importance to complying with regulatory requirements. With Retarus, we have a multi-channel communication partner who understands what we need as a bank. We were also able to see this for ourselves in an in-depth audit.”
Read customer story Carsten Hoffmann, Operational Manager, DZ Bank AG
“The Beth Israel Lahey Health System was challenged with several outdated faxing systems and a significant failure rate with a high TCO, leading us to look for a secure, consolidated, cloud-based solution with Epic integration. [...] Not only have we saved millions of dollars associated with faxing services, but we also reduced the failure rates which resulted in overall operational efficiency.”
Read customer story James Roeber, Director of Infrastructure Solutions, Beth Israel Lahey Health System
“Retarus Enterprise SMS has been running reliably for years – and whenever we have a question, support responds quickly and competently. That kind of dependability makes all the difference.”
Read customer story Dachser
“Retarus fully meets our goal of providing a standardized fax solution that can be used worldwide and complies with legal requirements.”
Read customer story Benjamin Bönning, System Consultant Communication, B. Braun Melsungen AG
Which Cloud Fax Integration Works Best for Your Business?
Find Out More About Retarus Cloud Fax
Analyst Reports
Find out what leading international analyst firms such as Gartner and IDC have to say about Retarus.
Product Documentation Center
Documentation, configuration and administration manuals, feature descriptions and more.
API Knowledge Center
Find API descriptions, mock servers and more in our integration documentation for developers.
Reliable Faxing and All IP
Ensure that you can continue to send and receive faxes after moving to an All IP environment.
Frequently Asked Questions
Is the migration from fax servers to enterprise cloud fax difficult?
Not with us. Enterprises often have complicated requirements or critical processes that cannot be interrupted, but we have experience from thousands of successful cloud-based fax migrations with many of the world’s leading companies.
Can we keep our fax numbers?
Yes, for example by porting your numbers to us. Get in touch with us and we’ll help you find out which option works best for you.
Is Cloud Fax secure?
Yes. We operate under a strict data security framework, and our processes and data centers are audited annually. We hold certifications such as SOC2, ISO27001, HITRUST, and TX-RAMP. Our products are compliant with HIPAA, GDPR, NIST, FERPA, CCPA, and more. We can process all data locally and in coordination with your compliance requirements if necessary.
We need to send and receive very large faxes with hundreds or even thousands of pages. Can Retarus Cloud Fax handle that?
Yes. Retarus Cloud Fax is built to meet enterprise requirements and reliably handles very large documents, so you do not have to split files or worry about missing pages. Outbound faxes can be monitored while they are in transmission, with clear status updates throughout the process. Our comprehensive reporting provides visibility into every fax job, allowing you to confirm successful transmission and verify that every page is accounted for. More about faxing large documents
Where can I find out more?
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.