Retarus Enterprise E-Mail Report 2026

Email Data Streams: Everything Under Control—At Least on the Surface.

How seemingly stable systems conceal legal, operational, and strategic dependencies

What the Report Reveals

Modern email environments are complex: cloud platforms, business tools, third-party services, routing, security …

Each component works on its own.
However, the system as a whole becomes more difficult to manage, develop, and audit.

The key points you should take away from our report

80 %

Companies believe they have virtually all of their email traffic under control.

45 %

rely on suppliers outside Europe.

61 %

can enforce their email policies without relying on third parties.

41 %

believe they are ready for an audit without any prior preparation.

What You’ll Learn in This Report

  • Why well-functioning email processes don’t automatically mean control.
  • Dependencies that often go unnoticed in everyday life.
  • Why transparency and auditability are increasingly becoming a stress test for companies.
  • What factors determine sovereignty and the ability to act in the long term.

Find out how companies assess their email infrastructure—and which risks often only become apparent upon closer inspection.

Download the Enterprise Email Report 2026

Even in the most sophisticated environments, there are blind spots

Even in the most advanced organizations, certain dependencies are difficult to identify:

  • limited access to certain data flows
  • Dependence on External Service Providers
  • Difficulties in responding promptly
  • lack of traceability in the event of an audit

That is exactly what the report examines.

When companies can no longer manage the complexity

Faced with increasing data flows and ever-more-complex architectures, some companies are reaching a tipping point. Nothing is openly breaking down. But every new development proceeds more slowly, every adjustment is more difficult, and every incident is harder to manage.

This is usually the point at which teams try to regain control over the critical components of their email environment:

  • regain an overview of the data streams;
  • Reduce dependencies;
  • strengthen their operational autonomy,
  • and to better manage legal, technical, and compliance requirements.

And this is exactly where Retarus comes in—helping companies regain control over their critical data flows without calling existing systems into question or unnecessarily complicating their environments.

Find out which risks often only become apparent upon closer inspection. Download the report now!

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