Integrate Retarus Messaging into Your Microsoft Ecosystem

Retarus Messaging

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

“"Our mail users have no troubles with using the processes related to Retarus. Releasing spam, maintaining personal black- and whitelists and understanding the need of an antispam/antimalware protection."”

Read full review IT Services, Management / Business Consulting

“In Retarus we have found a dependable partner for our email communications. Thanks to their reliable and innovative solutions, we are very well protected against any threats, both now and in the future.”

Read customer story Stefan Hopf, Head of Messaging and Collaboration, Continental AG

“Retarus Email Security is highly reliable and provides excellent detection rates.”

Read customer story Kurt Walther, Director Global IT and Business Intelligence, Puma AG

“Retarus is now so established at medbo that we simply think of you first whenever it comes to email. We get the impression that you all know what you’re doing.”

Read customer story Jürgen Schmalzbauer, Data Center Manager, medbo

“We were impressed by the short response times and the commitment of the Retarus technicians to troubleshooting.”

Read customer story Philipp Haag, Project lead, SRH IT Solutions

Learn More About Specific Solutions for Multiple Microsoft Applications

Microsoft Applications

Cloud Fax for Outlook

Hassle-free faxing via Microsoft Outlook with our Cloud Fax Add-In. Our native fax plugin for Microsoft Outlook makes sending and receiving faxes intuitive and user-friendly.

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SMS for Teams

Enable the receipt of SMS messages directly into a specific Microsoft Teams channel with Retarus Enterprise SMS. By integrating Retarus Enterprise SMS into Microsoft Teams, you can improve your communication flow and increase the efficiency of your team.

Fax for Windows

Send Faxes from your PC with Retarus Faxolution for Windows. No fax machine required. Get both comprehensive functionalities and an easy-to-use interface right on your PC.

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SMS for Outlook

Easily integrate SMS text messaging with your Microsoft 365 and Outlook instances. Globally reliable and secure. No in-house SMS infrastructure needed.

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.

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Interact with Our Messaging APIs

Try out our APIs functionalities in a mock-server environment without any implementation efforts.

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In Good Company

We partner with leading Microsoft Solution Partners, who implement our products into your processes.

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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.