- Retarus delivers secure, high-performance cloud messaging (email, fax, SMS, EDI) to global enterprises under full data compliance.
- Established in 1992 in Germany, the company now spans 16 offices and six data centres, including full APAC coverage via its Singapore branch.
Retarus: Enterprise-grade communication platform
Since 1992 Retarus has transformed business-critical messaging with its cloud-first design. The platform supports email, fax, SMS, and EDI messaging—all managed via APIs or user-friendly portals. It ensures secure transmission and automated delivery for high-volume and highly regulated operations, powered by fully-owned data centres and routing infrastructure.
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Retarus: Compliance, security and transparency
Retarus maintains strict compliance with GDPR, HIPAA, PCI DSS, SOC 1 and SOC 2 standards, using TLS or VPN connections for data transfer. Its Secure Email Platform includes advanced features like multi-layer antivirus, sandboxing, patient-zero threat detection, email archiving, and forensic SIEM integration. Administrators gain real-time monitoring and forensic access via the Retarus Enterprise Administration Services portal.
Retarus: Cloud Fax and WebExpress solutions
Retarus Cloud Fax offers global, hardware-free fax services through API or browser interfaces. It includes real-time monitoring, unlimited capacity, high delivery success, and integration with business applications. Its WebExpress tool enables cross-media campaigns—email, fax, SMS—with scheduling, tracking, personalisation, and adherence to data protections.
Retarus: Global reach and local expertise
Retarus operates from six data centres and 16 offices worldwide, including its Singapore branch, offering 24/7 support and local compliance. The company serves approximately 4,500 customers and processes over 80 million fax pages and blocks more than 500 million unsolicited messages monthly.
Retarus: Leadership and culture
Founded by Martin Hager in 1992, Retarus remains privately owned and focused on long-term innovation. Its leadership fosters a diverse, agile culture with a flat structure that encourages staff to propose solutions and adapt quickly to market changes.
