A Better Customer Experience Driven with Superior Communication Technology

Retarus Cloud Fax

We deliver critical messages to the right place while giving customers transparency over business processes, fax, email, and SMS communications.

CX Does Not Compromise

Do not settle for second best. Choose Retarus to receive, process and send critical documents at scale. Secure, reliable and compliant.

One Vendor, All Relevant Channels

Engage with customers via their preferred channel and benefit from central reporting and administration for fax, email, SMS, or RCS combined.

Always the Best Connection

Choose between multiple connection methods as needed including MuleSoft, APIs, pre-built connectors, adapters and direct integrations.

Customer Ratings and Reviews

“Retarus reacted swiftly to our enquiry, understood our needs and professionally implemented the project within a very short space of time.”

Read customer story Patrick Brandner, Application Hosting Service Delivery Manager, Solvay SA

“The collaboration with the team at Retarus was uncomplicated, and within a few weeks we had access to the interface from the Swiss data center. The integration was extremely easy for my team.”

Read customer story Riccardo Trombini, CTO, Starmind AG

“Like samedi, Retarus places great importance on data protection and compliance. Modern programming interfaces made it easy to integrate the services into our platform and they were up and running quickly and reliably.”

Read customer story Michael Siebert, Chief Principal Engineer (CPE), samedi GmbH

“The Retarus Cloud Fax Services, in combination with the Datanet CTO tool, enable the automated provisioning and billing of our fax users. At the same time, we have been able to reduce our monthly fax costs considerably in comparison to our previous, server-based solution – especially with respect to maintenance, operation and licenses.”

Read Customer Story Siegfried Ocklenburg, Cluster IS Infrastructure Manager, ABB

“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

Explore Our Solutions for Different Customer Experience Platforms

TEM for Salesforce

Unlock the full potential of your email marketing with Retarus' Transactional Email Integration for Salesforce. And even do transactional emails with the delivery rate of 98.67% far above market average.

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TEM for Adobe Email

Connect your Adobe applications and send transactional messages and volume-oriented campaigns via Retarus Transactional Email.

SMS for Adobe Marketing Cloud

Integrating Retarus SMS with Adobe’s platform through SMPP (Short Message Peer-to-Peer) enables efficient SMS marketing campaigns.

SMS for Salesforce

Reach your customers directly from your Salesforce Sales and Service Cloud instance with text messages powered by Retarus Enterprise SMS.

Deep Dive Into Our Integrations for CX and Other Applications

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

How does Retarus differ from native communication tools?

Unlike basic native tools, Retarus provides enterprise-grade messaging infrastructure with global delivery capabilities, advanced tracking, regulatory compliance, and 24/7 service monitoring. Our solutions extend your CX platform's capabilities with specialized business messaging expertise developed over 30+ years in the industry.

What type of integrations does Retarus offer for Salesforce?

Retarus offers multiple connection methods including MuleSoft, direct SMS integration, and SMTP adapters for fax, SMS, and email to automate customer notifications, document delivery, and communication workflows. Learn more in our Salesforce Integration Documentation.

How quickly can Retarus integrations be implemented?

Most Retarus integrations can be deployed within days rather than weeks or months. Our pre-built connectors for major platforms like Salesforce and Microsoft minimize development resources while our expert implementation team ensures smooth configuration and testing.

Can I send automated transactional messages through Retarus integrations?

Absolutely. Retarus integrations support fully automated messaging workflows triggered by events in your CX platforms. Whether it's appointment confirmations, billing notifications, or service updates, communications can be personalized and delivered through the customer's preferred channel.