Integrate Retarus Messaging into Your Microsoft Ecosystem
Our enterprise-grade fax, email, SMS, and EDI enhance your Microsoft applications such as Outlook, Teams, Dynamics, Exchange and Azure environments.
Level up the Digital Workplace
Control and automate communication workflows with APIs, gateways, and applications for the exchange of structured data.
Augment Your Existing Applications
Our services complement native Microsoft capabilities, providing enhanced communication features to improve user experience and adoption.
Performance Meets Compliance
We meet the highest security and compliance standards, while delivering exceptional performance for business-critical communication.
API Call, REST (OAS), SOAP, GraphQL, SMTP
Real-time status notifications
Dir Sync via Entra ID or On-Prem Active Directory
API Call, REST (OAS), SOAP, GraphQL, SMTP
Real-time status notifications
Dir Sync via Entra ID or On-Prem Active Directory
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“The Beth Israel Lahey Health System was challenged with several outdated faxing systems and a significant failure rate with a high TCO, leading us to look for a secure, consolidated, cloud-based solution with Epic integration.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
Learn More About Specific Solutions for Multiple Microsoft Applications
Want to Find Out More About Retarus Microsoft Integrations?
Everything You Need to Know
For product specifications, administrator manuals, API tutorials and more, see our documentation center.
Interact with Our Messaging APIs
Try out our APIs functionalities in a mock-server environment without any implementation efforts.
In Good Company
We partner with leading Microsoft Solution Partners, who implement our products into your processes.
Frequently Asked Questions
Is Retarus compatible with both cloud and on-premises Microsoft deployments?
Absolutely. Retarus supports hybrid environments, pure cloud deployments, and traditional on-premises Microsoft infrastructure. Retarus solutions adapt to your specific deployment model while providing consistent service quality and features.
Does Retarus support Microsoft Power Automate for workflow automation?
Yes, Retarus provides connectors for Microsoft Power Automate (formerly Flow) that enable you to incorporate fax, email, and SMS messaging into your automated workflows without coding.
How do I monitor communications processed by Retarus within my Microsoft environment?
We offer an integration with Microsoft monitoring tools via a reporting API and can deliver status notifications directly to Microsoft applications like Teams or Power BI. Additionally, the Retarus Enterprise Administration Portal (EAS) provides comprehensive monitoring and reporting.