Privacy by design
Messages travel through end-to-end encrypted rooms with device identity handling and key recovery logic for real-world usage.
Built for healthcare teams
End-to-end encrypted messaging for organizations that cannot improvise security.
YEL brings together private conversations, contact management, secure file sharing, and professional workflows.
- End-to-end encrypted one-to-one and group messaging
- Invitations, directory access, and profile visibility for healthcare workflows
- Matrix architecture on Flutter for cross-platform use
DM
E2E
Dr Martin
End-to-end encryption active
Hello, I am sending over the consultation summary.
Received. I am adding it to the secure record.
Attached file
consultation-report.pdf
Dr Martin
Encrypted room active
Invite accepted
Secure conversation started
E2E active
1:1 + group chats
Encrypted by default in Matrix-backed rooms
Files + local library
Secure file sharing and encrypted local storage
Contacts + directory
Invitations, optional visibility, and structured discovery
Flutter + Matrix
Cross-platform architecture for mobile, desktop, and web
The problem
Healthcare communication cannot stay stuck between convenience and control.
Teams need to move quickly, but consumer tools often create unnecessary risk: uncertain identity, fragmented traces, and weak control over hosting and file flows.
YEL takes a more rigorous path: keep the user experience simple while preserving a serious technical posture from account creation to encrypted message transport.
The solution
A focused communication layer for healthcare professionals and institutions.
YEL combines encrypted messaging, identity-linked accounts, contact workflows, and secure file handling in a product designed to stay understandable and portable.
Healthcare workflows built in
Contacts, invitations, profile visibility, and directory access are part of the product model instead of later add-ons.
Operationally realistic
Secure files, encrypted local storage, and clearly separated product functions support serious deployments.
Capabilities
Grounded in features already present in the product.
This section reflects functionality already present in the product.
Messaging
- End-to-end encrypted one-to-one and group conversations
- Conversation list, detail, rename, leave, and delete flows
- Automatic conversation opening from contact actions
- Responsive layouts for mobile and desktop usage
Identity and network
- JWT authentication and persistent sessions
- Profile fields with per-field visibility preferences
- Invite send, receive, accept, and reject workflows
- Directory browsing with optional visibility
Files and control
- Upload, download, and render secure files in conversation
- Encrypted local library with metadata
- Matrix settings and account-linking actions
- Localization support and built-in management actions
Use cases
Designed for organizations that need speed without losing discipline.
Private practices
Replace fragmented clinician exchanges with a private channel for referrals, follow-ups, and sensitive documents.
Care networks
Coordinate multiple professionals through group conversations, controlled invites, and directory search.
Institutions and pilots
Start from a portable base with clearly separated functions and an architecture that stays under control.
Security
End-to-end encryption, linked sessions, and controlled access.
YEL uses encrypted Matrix rooms, accounts linked to devices, and configurable visibility for profiles and directory presence. Final compliance still depends on hosting, internal policy, and legal review.
- Matrix-backed encrypted rooms for message transport
- Account, device, and conversation linking for session tracking
- Separated functions for accounts, contacts, conversations, files, and directory data
- Visibility controls for profiles and optional directory presence
Next step
Request a demo or start a deployment discussion.
Contact us for a demo, product discussion, or deployment conversation through `contact@yel.fr`.
contact@yel.fr