Qualified Registered Email 100% eIDAS-Compliant

Qualified Registered email with SecuMailer has the same legal status as a registered letter but it’s faster, safer, easier, and more cost-effective.

Legally valid across Europe

No more unsecured paper trails

Delivered directly to the receipient’s inbox

Certified under eIDAS, qREDS and qREMS

Effortless for everyone

Sending is simple: just use your own email client. Whether you’re in Outlook or Gmail, you send a registered email just like any other message. The recipient receives it directly in their inbox: right where they expect it.

Anytime, Anywhere

Send registered emails faster than traditional post, from any device. Whether on your phone, tablet, or laptop you stay in your familiar email environment, wherever you are.

100% privacy-proof

What doesn’t exist, can’t be leaked. Thanks to our privacy-by-design approach, there are no lingering documents or central data storage. After delivery, the registered email is instantly deleted from our servers.

Why send a registered email instead of a letter?

Thanks to SecuMailer’s qREMS certification, you can send fully qualified registered emails without compromising on legal validity. Compared to traditional registered letters, email has clear benefits:

Instant delivery: 24/7, no delays from postal services

Only visible to the intended recipient, no paper trails

Lower costs: a registered email is up to 10x cheaper

Next level registered email with qREMS

SecuMailer is the only qREMS-certified provider in the Netherlands. Every email sent is qualified and legally binding. Unlike other providers that only notify users to log in to a portal, SecuMailer delivers directly to the inbox the digital mailbox of your recipient.

This unique solution helps your organization fully comply with eIDAS legislation, in a way that’s secure and incredibly user-friendly.

How does qualified registered email work?

You send a qualified registered email from any device, no extra software needed. Just write your message in your usual email client (like Outlook or Gmail for business) and send it with one click. Your email is then converted into a legally binding registered message, valid across the EU.

Receiving a registered email

The recipient receives a notification and authenticates their identity. After that, the registered email is delivered directly to their inbox. This ensures the message reaches the right person, securely and verifiably.

Lgel proof built in

Our qREMS service logs every step of the delivery process and timestamps the email with a legally valid seal. Both sender and recipient receive confirmation of delivery including proof that holds up in court.


What’s the difference between qERDS and qREMS?

Registered email falls under the EU’s eIDAS regulation. To comply, you need a Qualified Trusted Service Provider offering secure digital delivery services like:

qERDS (Qualified Electronic Registered Delivery Service)
Messages are typically sent via secure portals with delivery confirmation.

qREMS (Qualified Registered Email Service)
Specifically built for email, this offers the highest standard in secure, qualified email delivery. Ideal when you need verifiable proof of email delivery.

Why choose SecuMailer for registered email?

SecuMailer is the only qREMS-certified provider in the Netherlands. That makes our solution one of a kind. It’s easy for senders and recipients alike. No software installation, no learning curve just sending registered emails like any other email, anytime, anywhere.


Information and privacy protection

By using SecuMailer, you are guaranteed to comply with the requirements of the GDPR (General Data Protection Regulation). Do you have any questions about this? One of our privacy specialists can answer all your questions!
One of our strengths is data minimization, a requirement of the GDPR. Unlike a portal solution, the email disappears from our platform immediately after delivery, so we are not a collection source of sensitive information. What is not there cannot leak.
We are proud to be recognized as the only fully European Cyber Security solution for Secure Mailing. The ECSO label serves as a distinguishing factor based on geographical location, providing recognition and visibility to European cybersecurity companies that develop their businesses based on European values. On May 9, 2023, the label was awarded to SecuMailer by Security Delta (HSD).
SecuMailer is certified under ISO 27001, the standard for information security. Upon request, we can provide a copy of the certificate and the corresponding statement of applicability.
SecuMailer is certified under NEN 7510, which is the standard for information security in healthcare. Upon request, we can provide a copy of the certificate and the corresponding statement of applicability.
SecuMailer complies with all the requirements of NTA 7516 and was certified until May 2023. This is the standard for secure emailing with healthcare and legal information.

View the declaration of inclusions and exclusions for NCS 7516.
Since November 2023, SecuMailer has been fully certified for eIDAS REMS, and since July 1, 2024, SecuMailer is listed on the EU trusted list as a trusted provider of QREMS Qualified Registered E-mail Service.
SecuMailer has undergone an ISAE 3000 SOC 2 Type 2 audit. No findings or deficiencies were identified in this audit. Upon request, we can provide a copy of the certificate. The audit report can be reviewed in a joint session.

Service level

It doesn’t make us unique, but it’s what we stand for. We don’t use customer numbers; we use company names and contacts. Our dedicated team is always ready to assist you, and there’s a good chance you’ll often speak to the same person!
Do you have questions? We are always available by phone from Monday to Friday, from 09:00 to 17:00! Call us at +31 320 337 381.
We guarantee that our service is available 99.95% of the year. This is included in our SLA (Service Level Agreement).
On weekdays, we are available by phone from 09:00 to 17:00 for questions and support. Prefer to send an email? No problem! We also provide a prompt response to emails. You can reach us for service and support at service@secumailer.com.
As a customer, you will have access to our self-service portal. Here, you will find, among other things:
• Frequently asked questions
• Release notes
• SLA reports
• Manuals.
In the SLA, we make promises to our customers. Every month, there is an SLA report available in the self-service portal that shows how we are keeping our commitments.

Discover the most advanced registered email solution!

Curious to see it in action? Schedule a live demo with one of our experts. Prefer to dive deeper right away? Our whitepapers give you all the details you need after reading this page.