Partner Ecosystem
Retarus
Part of the Rubber Duck Technology partner ecosystem — vetted for capability, accountability, and fit before they ever meet a client.
About the partner
About Retarus
Secure Enterprise Cloud Messaging & Communications
Retarus is a global enterprise cloud messaging and communications provider founded in 1992 and headquartered in Munich, Germany. Retarus delivers secure cloud email security, cloud fax services, transactional/business messaging (SMS, EDI, A2P), and document/process integration to large enterprises worldwide, operating its own global data centers. It is known for high-security, compliance-grade messaging infrastructure and strong adoption among Fortune 500 and DAX enterprises.
Why teams choose Retarus
- 30+ years (since 1992) of enterprise communications
- 'Made in Europe' email security (data sovereignty)
- Deep SAP, Microsoft 365, Salesforce & EHR (Epic/Cerner) integrations
- AI document processing (IDP)
- Analyst-recognized (IDC MarketScape Leader; Radicati Top Player)
- Global delivery with HIPAA/GDPR compliance
Capabilities we have validated
- Own global data centers (EU data sovereignty)
- Enterprise-grade email security + cloud fax + messaging in one
- Strong DACH/EU compliance posture
- 30+ years messaging heritage
- Patient Zero Detection / Active Defense email security
- Fortune 500 / DAX customer base
Recognition & proof points
- Leader, IDC MarketScape: Worldwide Digital Fax 2024
- Top Player, Radicati Secure Email Market Quadrant 2025
- cited by Forrester, Gartner and IDC.
AI in the offering
Intelligent Document Processing (IDP) and Intelligent Capture use AI to extract and structure data from inbound documents (e.g., order confirmations into SAP); AI-assisted automation across messaging workflows.
Profile maintained by Rubber Duck Technology research from primary sources and partner collateral · Last verified Sep 13, 2026 · High confidence · Verified multi-source.
Capabilities
Solutions Delivered by Retarus
The outcomes this partner is equipped to deliver — drawn from our vetting record, not their marketing deck.
communications_cx
CPaaS / Messaging APIs
Retarus delivers enterprise cloud messaging across transactional email, SMS, RCS, and A2P channels, operating its own global data centers for secure, compliance-grade delivery.
EU data sovereignty — Operates its own global data centers with 'Made in Europe' infrastructure for data sovereignty.
Enterprise integrations — Deep connectors to SAP, Microsoft 365, Salesforce, and EHR systems embed messaging into core processes.
30+ year heritage — More than three decades of enterprise communications experience since 1992.
Integrates with SAPMicrosoft 365Salesforce
Delivery
How We Deliver
Engagement & delivery models we have validated with this partner — where the slide deck ends and the actual work begins.
communications_cx
Managed Communications
Retarus operates secure cloud messaging, email security, and fax services as managed offerings on its own global data center infrastructure.
Delivery: Delivered as fully managed cloud messaging services with global, compliance-grade operations.
Own data centers — Global self-operated data centers support EU data sovereignty and compliance.
Compliance posture — Delivery aligns with HIPAA, GDPR, and strong DACH/EU compliance requirements.
Integrates with SAPMicrosoft 365
managed_it_cloud_ops
Integration Services
Retarus integrates its messaging and document services into enterprise systems including SAP, Microsoft 365, Salesforce, and Epic/Cerner EHRs.
Delivery: Delivered as implementation and integration services into core enterprise platforms.
Deep enterprise connectors — Pre-built integrations span SAP, Microsoft 365, Salesforce, and EHR systems.
AI document processing — Intelligent document processing connects captured documents into business workflows.
Integrates with SAPSalesforceMicrosoft 365
managed_it_cloud_ops
24/7 Support
Retarus provides around-the-clock enterprise support for its global messaging and communications infrastructure.
Delivery: Delivered as 24/7 enterprise support across global operations.
Global delivery — Support spans worldwide operations for large enterprise customers.
Enterprise-proven — Backed by a Fortune 500 and DAX customer base with high reliability expectations.
managed_it_cloud_ops
Implementation & Onboarding
Retarus implements and onboards enterprises onto its cloud messaging, email security, fax, and document processing services.
Delivery: Delivered as implementation and integration engagements for enterprise customers.
Enterprise scale — Onboarding is built for large enterprises operating across regions.
Compliance-ready — Deployments align with strict data sovereignty and compliance needs from the start.
Proof
Results with this partner
Documented outcomes from real engagements — not testimonial vibes.
Case studies featuring this partner are being prepared. See all client results →
Resources
Documents & collateral
Datasheets, spec sheets, case studies and pricing references collected while vetting Retarus — 2 documents.
Is Retarus the right partner for you?
We'll give you the straight answer — including who to compare them against.