Retarus
Procurement partnerAbout
Retarus is a global secure communication leader that provides cloud-based messaging and business process solutions for mid to large enterprises, especially those in highly regulated industries. Founded in 1992 and privately owned, the company operates self-sufficient data centers across three continents and specializes in cloud fax, transactional email, enterprise SMS, email security, and business process automation solutions.
Details
VenSearch Intelligence
Ideal Customer
- Retarus explicitly targets mid to large enterprises and 'upper middle market and international corporations,' particularly those in highly regulated industries with complex, business-critical messaging requirements.
- Its self-described sweet spot is organizations that need multi-channel (fax, email, SMS, EDI) enterprise messaging deeply integrated into major ERP and EHR platforms such as SAP, Microsoft 365, Epic, and Salesforce.
Key Differentiators
- Retarus differentiates primarily on its 33-year track record, self-operated global data center infrastructure (ensuring data sovereignty and no third-party cloud dependencies), and deep compliance depth across multiple regulated industries.
- It has been named a Leader in the IDC MarketScape for Worldwide Digital Fax in both 2024 and 2026 (two consecutive cycles), and achieved a 'Top Player' position in the Radicati Secure Email Market Quadrant 2025 and 'Major Player' in IDC's Worldwide IDP assessment.
Industries Served
- Retarus serves a broad range of industries with particular depth in healthcare (Epic, Cerner integrations; HIPAA/HITRUST certified), financial services and banking, manufacturing, automotive (TISAX certified), insurance, transport and logistics, telecommunications, public administration, and IT/software.
- Its compliance portfolio is specifically tuned for regulated sectors—supporting HIPAA and HITECH in healthcare, Sarbanes-Oxley for public companies, PCI-DSS for financial services, TISAX for automotive, and DORA/NIS2/KRITIS for critical infrastructure.
Service Coverage
- Retarus operates globally across three continents with 15–16 international offices and five self-operated data centers in the US, Europe, and Asia-Pacific (Singapore).
- Its US headquarters is in Secaucus, NJ, with additional US presence in New York and Las Vegas.
Partnerships
- Retarus maintains deep technology integrations with SAP (S/4HANA on-premise and cloud, SAP ECC, SAP Business One, SAP BTP) and Microsoft (Exchange, Outlook, Teams, Azure, Microsoft 365), and is listed in Epic's connection hub for healthcare EHR integration.
- It is an IBM PartnerPlus VAR/Reseller/Solution Provider with authorizations across IBM Cloud, Watson, and other IBM platforms.
Company Size & Ownership
- Retarus was founded on December 1, 1992 by Martin Hager, who continues to serve as CEO and president.
- The company employs approximately 450 people across its global offices and reported revenue of approximately €70 million (roughly $79M USD) in fiscal year 2024—its seventh-plus consecutive year of record results, surpassing €60M for the first time in FY2021.
Compliance & Certifications
- Retarus holds an extensive compliance portfolio including SOC 1 Type II and SOC 2 Type II (ISAE 3000/SSAE 18), ISO/IEC 27001, HITRUST e1 Certification (specifically for its US fax API and cloud fax gateways), TISAX (automotive, certified by TÜV SÜD), ENS (Esquema Nacional de Seguridad) at the highest 'high' level in Spain, and TX-RAMP for Texas state government cloud security.
- The company supports HIPAA with signed Business Associate Agreements (BAAs), GDPR with European data processing guarantees, and product-level compliance frameworks including NIST, FERPA, and CCPA.
Compiled from public sources by VenSearch · Last researched October 14, 2026
Offerings
10 offeringsCloud Fax
Enterprise-grade cloud fax solution for business-critical needs that provides reliable document transmission with high availability and compliance requirements. Includes integrations for digital workplaces, business applications, and native APIs with features like email-to-fax, multi-function printer support, and enterprise fax portal.
Cloud Fax for Business Applications
Pre-configured connectors and integration blueprints for seamless fax integration with business applications such as Epic and SAP. Enables reliable fax transmission directly from business systems with high delivery rates and transparent communications.
Cloud Fax for Digital Workplaces
Cloud fax integration for digital workplaces enabling faxing through smart devices, Outlook, web portal, print driver, or multi-function printers. Provides seamless and reliable faxing with intuitive user interfaces requiring minimal training while maintaining robust cloud infrastructure.
Enterprise SMS
Scalable, dependable text messaging solution for enterprises with global connectivity to 99% of mobile networks worldwide. Features two-way SMS capabilities, unlimited capacity, 99.9% delivery rates, and extensive integrations with business applications including SAP, Microsoft Teams, and Salesforce.
Integrations for Healthcare
HIPAA-compliant messaging solutions designed for healthcare systems including Epic and Cerner integrations. Provides secure fax, email, and SMS capabilities that meet healthcare regulatory requirements and integrate with electronic health record systems.
Multichannel Messaging
Unified messaging solution that enables sending messages via email, fax, or SMS directly from a web browser. Provides a single interface for managing multiple communication channels with campaign management and distribution capabilities.
Native Fax APIs and Gateways
Developer-friendly APIs and gateways for integrating cloud fax into business applications using open standards like REST, SOAP, SMTP, and FTP. Provides flexible configuration options and extensive documentation for custom fax implementations across broad application landscapes.
Native Transactional Email APIs and Gateways
Standardized interfaces and APIs for integrating transactional email into modern and legacy applications, whether on-premises, cloud, or hybrid. Provides active traffic control, guaranteed throughput, and comprehensive real-time monitoring through REST and SMTP protocols.
Transactional Email
High-performance email delivery solution providing guaranteed throughput rates of 10+ million emails per hour, 98%+ delivery rates, and superior inbox placement. Includes advanced reputation management, CSA certification, and comprehensive APIs for business application integration.
Transactional Email for Business Applications
Seamless transactional email integration directly from business applications like SAP and Salesforce. Provides high-volume email capabilities with exceptional throughput and delivery rates without burdening existing infrastructure, including centralized monitoring and reporting.
Considering Retarus?
Our team will work with you to determine if Retarus is the right fit for your organization. From research and assessment through procurement negotiation and ongoing vendor management — we handle the entire process at no cost to you.