REST API

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SecuMailer has a REST API for sending secure emails. Both the GDPR and the NTA 7516 functionality are fully accessible via this API.

The API is documented with OpenAPI specification 3.0.1.

The REST API has webhook functionality, which means that the SecuMailer platform can communicate email events with an HTTPS endpoint of the sender.

SMTP API

The SMTP API is usually the simplest integration option for many backend applications because backend applications often have a provision for an SMTP client on board.

We have successfully integrated for customers with Salesforce, SAP and Centric. We have also successfully integrated with patient file systems such as Medisoft Dossier Manager.

GraphQL API

The SecuMailer platform offers insight into email events. This can be done on the basis of a (push) webhook call (see REST API above) and on the basis of a (pull) GraphQL endpoint.

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Empower secure health data exchange under EHDS

Ensure every email meets the strict privacy, interoperability, and trust requirements of the European Health Data Space — without slowing down your communication.

The European Health Data Space (EHDS) is transforming how health information is shared, stored, and protected across Europe. Whether you’re a healthcare provider, researcher, or policymaker, compliance is no longer optional — it’s essential for maintaining trust, safeguarding patient privacy, and enabling secure cross-border collaboration. SecuMailer gives you a future-proof email solution that integrates seamlessly into your existing workflows, ensuring every message is compliant, encrypted, and ready for the EHDS era.

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EHDS

What is EHDS?

At the heart of the European Health Data Space (EHDS) are three interconnected pillars designed to create a secure, transparent, and interoperable health data ecosystem across Europe. These pillars define how health data is accessed, shared, and protected, ensuring that citizens remain in control of their information while enabling healthcare providers, researchers, and policymakers to leverage trusted data for better care, innovation, and policy decisions.

Three core pillars of EHDS

Minimize the risk of data breaches

Verify recipients before delivering sensitive data

Provide a legally demonstrable proof of secure delivery

Who needs to comply?

NTA 7516 applies to organizations in the public domain and healthcare sector that handle sensitive or medical data via email. Examples include:

  • Healthcare providers — hospitals, clinics, GGZ institutions
  • Municipalities & public services
  • Youth care institutions
  • Judiciary & legal bodies
  • Safe Home & probation services
  • Government agencies & ministries

The challenges of NTA 7516 compliance

Many organizations struggle to meet NTA 7516 because traditional solutions are outdated or user-unfriendly:

  • Complex workflows: Messaging portals and pick-up links create friction for recipients.

  • Low adoption: Citizens and patients resist cumbersome processes.

  • Repeated authentication requests: Leads to frustration and support calls.

  • Interoperability gaps: Secure email providers often don’t talk to each other.

How SecuMailer helps

  • Direct inbox delivery

    no portals, no pick-up links.

  • One-time 2FA every 90 days

    less friction for recipients.

  • Encryption by default

    no decision-making for staff.

  • Interoperability built in

    works with Zivver, ZorgMail, and judiciary systems.

  • Privacy by design

    automatic deletion of content after delivery.

Key requirements of NTA 7516

To comply, your secure email solution must provide:

  • End-to-end encryption for all messages

  • Recipient authentication via two-factor authentication (2FA)

  • Inbox delivery without portals

  • Interoperability between providers

  • Minimal user disruption (max 4 authentication prompts/year)

  • Secure infrastructure & logging for legal proof

Technical & Legal Snapshot

Full end-to-end encryption using modern standards.

SMS-based 2FA; one prompt every 90 days.

Timestamped delivery records available for legal defense.

Works seamlessly with other certified secure email services.

Deletes content after delivery; only keeps proof-of-delivery metadata.

Why choose SecuMailer for NTA 7516 compliance?

  • Fully certified under NTA 7516:2020.

  • User-friendly — send secure email as easily as regular email.

  • Compatible with other NTA 7516-certified providers.

  • Security by default — every message is sent securely without extra clicks.

  • Proven in government & healthcare — trusted by ministries, municipalities, and care institutions.

Future of NTA 7516

Compliance expectations are evolving. Authorities are tightening standards and expanding enforcement. SecuMailer ensures you stay ahead of these changes, giving you a future-proof platform that meets today’s requirements and tomorrow’s regulations.

Get compliant — without disrupting your communication.

Whether you work in healthcare, government, or public services, NTA 7516 compliance is mandatory for protecting sensitive data via email. With SecuMailer, you get full compliance, ease of use, and no workflow disruption.

Ensure your email meets every compliance standard

Speak with our specialists and discover how SecuMailer keeps you fully aligned with NTA 7516 requirements.
Request a free compliance consultation