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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Send and receive files up to 5TB securely and compliantly, while staying fully in control

With the SecuFiler app, you can easily and securely exchange one or more files.

When handling financial, medical, or legal data, secure file transfer isn’t optional, it’s essential. You can’t afford to lose, leak, or mishandle it. SecuFiler is built for that. It lets you send and receive files up to 5TB securely, with all data processed exclusively in Europe, and in compliance with EU regulations including NTA 7516, GDPR, NIS2, and eIDAS.

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Full data sovereignty

Files shared through SecuFilter are encrypted, stored temporarily, and hosted securely within the Netherlands. No external services, no uncontrolled cloud — just total control over your data.

Beyond attachments

Stop sending sensitive files as risky email attachments. With SecuFilter, you share via encrypted links with strict access controls, download limits, and expiration settings. You stay in control, even after sending.

Compliant by design

SecuFiler ensures secure file exchange in full compliance with GDPR, NTA 7516, and sector-specific regulations. Built for legal, financial, and medical data without compromising ease of use.

Why Secufiler?

To exchange files without compromising security and compliancy.

In most cases, it’s not possible to send or receive files over 25 MB by email. That’s why users turn to unsecured third-party platforms, which can lead to uncontrolled access and serious compliance risks. SecuFiler keeps the file exchange process within your secure infrastructure,  your file stays yours, with you in full control.

  • Send securely from your trusted environment (email or WebApp)

  • Receive files from your clients through your own branded upload page

  • Add optional 2FA for medical and legal-grade protection

  • Process data exclusively within the EU for full compliance assurance

  • Stay in control with expiry dates, recall options, and complete auditability from start to finish

How SecuFiler works

Send and receive in 3 simple steps
Step 1

Enter sender and recipient emails

Start by entering your own email address and that of the intended recipient. This step initiates the secure delivery process and ensures the system knows who is sending and receiving the files.

Step 2

Select files to send

Choose one or more files to share, up to a total size of 5TB. SecuFilter supports a wide range of file types, including documents, photos, videos, and more.

Step 3

Recipient receives a secure download link

The recipient gets an email with a unique, encrypted download link. After authentication, they can access and download the files safely — without installing software or creating an account.

Note: Receiving files is just as simple — users upload documents via your branded SecuFilter web page following a similar 3-step process.

Want more technical detail?

Explore our documentation

SecuFiler’s Features

The features of SecuFiler complement the features of SecuMailer.

SecuMailer

WebApp

Integrate SecuFiler as a dedicated page on your organization’s website. This allows your clients to securely send confidential documents directly to your organization with ease..

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Send files up to 5TB

Send multiple files at once up to a total of 5TB. That’s equivalent to about 1,250,000 high-resolution photos more than enough for almost any situation.

NTA-7516-who-what-where

Various supported file types

Supports a wide range of file types. With SecuFiler, you can securely send all common file formats, not just PDFs, but also documents, images, and videos..

What-does-secure-mail-really-cost

Suitable for medical infomration

Need extra security? Enable 2FA for added authentication. This adds an extra layer of protection and ensures compliance with NTA 7516, perfect for securely exchanging sensitive medical data.

10-questions-about-NTA7516

Suitable for legal information

Legal: Need extra security? Enable 2FA for added authentication. With full NTA 7516 compliance, this feature is ideal for safely sharing confidential legal documents.

NTA7516

Link wizard

Use the SecuFiler Link Wizard to simplify uploads. Generate a pre-filled link to share with your client—they only need to select their files and click send. .

Trusted by regulated sectors

Municipalities

Government & Municipalities

Communicate confidentially with citizens, departments, and partners, fully compliant with GDPR. Align with eIDAS requirements for legally registered digital delivery, with full traceability. SecuMailer delivers secure messages directly to the recipient’s inbox: a simple and secure way to share sensitive decisions, notifications, and documents. It’s secure, accessible communication without barriers.

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Health-Care

Healthcare providers

Send patient records, referrals, and lab results securely and in full compliance with NTA 7516 and GDPR. SecuMailer integrates with your EHR system and enables secure email that meets healthcare standards ensuring interoperability across organizations. Need to reach a patient? Your message arrives directly in their inbox: no portals, no repeated logins, just secure and accessible communication.

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Finance

Legal professionals

Communicate confidentially with clients, courts, and legal partners fully compliant with GDPR. Need legal proof of delivery? SecuMailer supports eIDAS-compliant registered email, ensuring full traceability and legal validity. For regular confidential messages: secure emails arrive directly in the inbox, with no portals or logins required. A flexible solution for both formal and everyday legal correspondence.

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Legal

Financial institutions

Send sensitive documents like payslips, tax returns, or financial statements securely and GDPR-compliant. With SecuMailer, you reach clients directly in their inbox, without requiring a portal or login. Need legal proof of delivery? Our eIDAS-compliant registered mail gives you full traceability. It’s professional, secure communication made simple for both you and your clients.

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business

Business Services

Whether you're sending contracts, proposals, reports, or personal data, SecuMailer ensures your emails are secure and fully GDPR-compliant. Messages are encrypted and delivered straight to the recipient’s inbox, without requiring portals, accounts, or logins. It’s a professional, accessible way to protect sensitive communication and strengthen trust with your clients.

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Housing

Housing & Property Management

Send rent contracts, payment reminders, or tenant communications securely and in full compliance with GDPR. SecuMailer lets you reach tenants and partners directly in their inbox. Need legal proof of delivery? Use our eIDAS-compliant registered email with full traceability.

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Ready to share large files the secure way?

With SecuFiler, you ensure that your privacy-sensitive documents are delivered securely to the recipient, while you remain in full control.

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See how easy secure emailing can be
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