Safely send sensitive user data via secure e‑mail

End‑to‑end encypted and GDPR compliant

The Secure E‑mail API allows you to safely send confidential, personal, financial or even medical data over e‑mail on any device. Secure E‑mails are encrypted end-to-end and sent over a secure TLS connection, making sending and receiving sensitive data easier for everyone. No need for your customer to log into a secured portal or install security plugins any longer. Integrate the API directly into your application or mail server. The API even delivers feedback on delivery and insightful daily reports, so you are always informed of sending status.

How it works in a few minutes


The API allows you to send end-to-end encrypted e-mail, taking care of your regulatory (GDPR) and healthcare specific (NTA 7516/NEN 7510) requirements. The API creates a bridge with the e-mail environment of the recipient and confirms whether e-mail can be delivered in an encrypted way. If so, the e-mail is sent over a secure TLS connection. If not, the Secure E‑mail API automatically provides an alternative, secure method of delivery.

What our customers say

"In our communcation safety and security are highly important. That's why we send e-mail via a secure connection since the start of 2019."
Hans Fierloos
CISO ai – Uitvoeringseenheid Bommelerwaard
“Secure E-mail is of the utmost importance to an ICT company like JustData. As an ICT specialist I can't think of my customer's sensitive information being comprimized. The solution Secure E-mail offers is 100% trustworthy. I can recommend SecuMailer to every self-respecting company.”
Mark Gaertner
Owner – JustData

Why use the Secure E‑mail API

Improve customer satisfaction with the Secure E-mail API by SecuMailer

Improve customer satisfaction

Give your customer access to personal data in a convenient way, without the need to log in or install anything.

Send sensitive  data securely with the Secure E-mail API

Send sensitive data securely

Communicate sensitive data to your customer directly over e-mail while staying fully compliant with healthcare (NEN/NTA), security (ISO) and GDPR regulations.

Save costs on invoicing with the Secure E-mail API

Save costs on invoicing

Sending invoices over secure e-mail increases the attention value of your bills, reinforces quick payment and cuts costs for security portals.


A one-off setup fee of € 150 euro applies per domain per company.

No. of mailboxes Price per mailbox per month Minimum price per month
1 - 100 € 5,00 € 100
101 - 500 € 4,00 € 500
501 - 1.000 € 3,50 € 2.000
1.001 - 2.500 € 3,00 € 3.500
2.501 - 5.000 € 2,50 € 7.500
5.001 - 10.000 € 2,00 € 12.500
10.001 - 25.000 € 1,75 € 20.000
25.001 - 50.000 € 1,50 € 43.750
50.001 - 100.000 € 1,25 € 75.000
100.001 - 250.000 € 1,00 € 125.000

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