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
“With Retarus WebExpress our marketing department is able to take action much faster than before. Fax campaigns can now even be sent at short notice without difficulty.”
Read customer story Karl-Heinz Aupperle, Marketing Head, winkler Group
“Swift and simple filtering and prioritization of information are the basis of any effective communication process.”
Read customer story Peter Zündorf, Head of IT systems, Deutscher Sparkassen- und Giroverband (DSGV)
“The efficient, neat implementation did not only win us over, but also our business partners. One big automobile manufacturer expressly pointed out the quick reaction times and general expertise of the Retarus team.”
Read customer story Alexander Grothe, eCommerce Team Leader, Optibelt GmbH
“We send more than a million faxes every year, so we were looking for a service provider who could reliably handle our high fax volumes, even at peak times such as the run-up to Mother’s Day. Retarus met every single one of these requirements.”
Read customer story Marc Ober, IT Director, Interflora France
“We will eliminate all of Austrian Post’s remaining fax servers step by step replacing them with the appropriate Retarus services.”
Read customer story Reinhard Knie, Head of Solution Management CEE , Atos
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.