Zero-knowledge by design
- End-to-end encryption (AES-256)
- Keys stay in your hands
- No plaintext on the server
HEALTHCARE
Share patient data without breaking your
duty of confidentiality
Send findings, medical reports, images and therapy records to patients and colleagues with end-to-end encryption — plaintext never leaves your browser, and the keys stay with you.
GDPR ART. 9
Health data is among the most sensitive there is
GDPR Article 9 and medical confidentiality demand the highest protection. CRYMBL makes secure sharing as easy as email — just without the risk.
Patients receive without an account
- No account needed for recipients
- Self-destructing links & open limits
- Secure return channel via CrymblBox
Our Strengths
The simple and secure way to share information
Everything you need to send and receive confidential data.
Simple.
- Intuitive on every device – no training, no manual.
- A few clicks are all it takes to share confidential data securely.
- Simplicity is not a compromise for us, but the key to true freedom.
Secure.
- End-to-end encryption – no one except the recipient knows your data.
- Zero-knowledge principle: Even CRYMBL cannot read your content.
- Security doesn’t have to be loud – it just has to be reliable.
Share.
- Exchange information clearly and purposefully – for teams and individuals.
- Data minimisation: Share only what the recipient really needs.
- CRYMBL is not a by-product – it is our mission.
Privacy First
-
83%of data breaches involve passwords – CRYMBL protects you.
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256 BitAES encryption – military standard for every link.
-
0 msData storage on our servers – Zero-Knowledge by Design.
Your data belongs only to you – for exactly one second.
Whether login data, passwords, PINs or sensitive documents – with CRYMBL you can send messages and files so that they can only be read or downloaded once and are then automatically deleted.
Unlike email or traditional cloud tools, CRYMBL never stores in plain text. Everything is encrypted directly in your browser before it leaves your device – and only the recipient has the key.
Expert voices
What regulators and analysts require
End-to-end encryption, keys in the customer's hands, European law — what experts and authorities require for sensitive data is standard at CRYMBL.
“Germany's data protection authorities require that anyone transmitting high-risk data must use end-to-end encryption — and point to secure portals where email encryption fails in practice.” – That is exactly what CRYMBL was built for.
German Data Protection Conference (DSK)
Guidance "Transmission by email" · Federal and state supervisory authorities
“Since the Schrems II ruling, the European Data Protection Board has required effective encryption for data transfers, with keys that stay beyond the reach of foreign authorities.” – CRYMBL fulfils this zero-knowledge principle by design.
European Data Protection Board
Recommendations 01/2020 (Schrems II) · EDPB, Brussels
“The BSI makes it clear: confidentiality in data exchange can only be ensured through end-to-end encryption — data is encrypted when sent and only decrypted again at the recipient.” – CRYMBL works exactly on this principle.
Federal Office for Information Security (BSI)
Recommendations on encrypted communication · Bonn
Transparent & Fair
Choose Your Plan
No contract, cancel anytime. Start for free.
Monthly
Yearly
2 months free!
Basic
Free!
Perfect for personal use
-
8 encrypted burner notes per month
-
5 secure per month
A file share can also contain several individual files in one go.
-
50 MB per
A file share can also contain several individual files in one go.
-
Set number of opens and expiry date
-
Personal dashboard
Standard
10
€
/Month
billed monthly
For regular users
-
40 encrypted burner notes per month
-
20 secure per month
A file share can also contain several individual files in one go.
-
100 MB per
A file share can also contain several individual files in one go.
-
Set number of opens and expiry date
-
Dashboard
-
Team feature for multiple users
Most Popular
Professional
29
€
/Month
billed monthly
For professionals and growing teams
-
120 encrypted burner notes per month
-
40 secure per month
A file share can also contain several individual files in one go.
-
2 GB per
A file share can also contain several individual files in one go.
-
Set number of opens and expiry date
-
Dashboard
-
Team feature for multiple users
-
Read receipts
-
Multiple colors to choose from
Enterprise
41
€
/Month
billed monthly
For organizations with the highest security requirements
-
Unlimited encrypted burner notes
-
Unlimited secure
A file share can also contain several individual files in one go.
-
10 GB per
A file share can also contain several individual files in one go.
-
Set number of opens and expiry date
-
Dashboard
-
Team feature for multiple users
-
Read receipts
-
Custom expiry date
-
Custom colors and branding
-
CrymblBox – encrypted file reception
-
Geo-blocking
CRYMBL Blog
Latest Blog Articles
Everything about secure communication, data protection, and zero-knowledge encryption from the CRYMBL team.
Legal, Compliance
12 min read
AI and Data Protection: The Legal Challenges in Overview
Artificial intelligence runs on data; data protection law constrains it. From this tension arise concrete legal challenges – set out along the GDPR and the AI Act.
9th June 2026
Security
12 min read
What Does Zero-Knowledge Encryption Mean?
Zero-knowledge describes what a provider does not know about your data. The term promises a great deal – and is often confused with an entirely different concept.
19th April 2026
Security, Compliance
12 min read
Sending Passwords by Email – Securely
A plaintext password in a mailbox is an avoidable liability. Which methods – from out-of-band delivery to zero-knowledge one-time links – actually protect a credential in transit and at rest.
16th March 2026