retarus GmbH

Retarus is a provider, based in Germany, of cloud messaging services for business communication. It carries email, fax, SMS and EDI through a global delivery network and describes this work as information logistics.

The company stresses security, compliance and European data protection in how it runs its services.

What Retarus offers

• Transactional email — delivery of business email with attention to inbox placement.
• Cloud fax — reliable fax delivery with high availability, with an IDC MarketScape Leader recognition in 2026.
• SMS — messages sent at scale, used by insurers among others.
• Cloud EDI gateway — integrating customers and suppliers digitally.
• Global e-invoicing — compliant electronic invoicing, including for rules taking effect in Germany in 2027.
• Email security — protection built and operated in Europe.
• Document intelligence — processing industrial documents.

Who it works with

Global organisations and companies in demanding or regulated sectors, including healthcare and insurance.

Key facts

• Based in: Germany.
• Certification: highest-level certification under the national security framework in Spain.
• Infrastructure: highly available data centres in a global network.