Courier — Secure File Sharing Platform
PIN-protected, auto-expiring file shares with full access tracking
On this page 6
Key Features
- PIN-protected file shares
- Automatic expiration after configured time
- Full access tracking and audit trail
- Per-organization file isolation
- Whitelist-based file type control
- Secure authentication
Secure File Sharing for Client Communications
Email attachments get forwarded, intercepted, or sit in inboxes indefinitely. That's a problem when you're sharing confidential client documents.
Courier replaces insecure file transfers with PIN-protected, time-limited shares — and logs every access.
How Courier Works
1. Create a Share
Log in securely, create a share, and upload your files. Courier accepts common business formats (documents, images, archives) with configurable size limits.
2. Set Protection
Each share gets a unique PIN code automatically. Set the expiration period — files become inaccessible after that time, no manual cleanup needed.
3. Send Securely
Send the access link to your recipient. The PIN goes out separately. Even if someone intercepts the link, they can't open the files without both pieces.
4. Track Access
Every download is logged with timestamps and recipient details. That audit trail is there when compliance or your security team asks for it.
Key Features
- PIN Protection — Every share requires a unique PIN, so only the intended recipient can access files
- Auto-Expiration — Shares expire after your configured time period. No forgotten links left accessible for months.
- Access Tracking — Timestamped audit trail of every download — who accessed what, and when
- Organization Isolation — Files stored in per-organization buckets with strict data separation between clients
- File Type Control — Whitelist-based file type restrictions prevent dangerous file types from being shared
- Size Limits — Configurable per-file (100 MB default) and per-share (500 MB default) limits
Platform Integration
Courier is part of the eSolia platform ecosystem, connecting through Nexus — our central identity and storage hub:
- Periodic — DNS and email security monitoring
- Pulse — Security and compliance tracking
- Courier — Secure file sharing (this page)
- Nexus — Central identity provider and file storage
All platform tools authenticate through Nexus, with organization registration managed centrally.
Visit Courier
Access the live platform at courier.esolia.co.jp.
We're Here to Help
Want to stop sending confidential files over email? Contact us below to set up Courier for your organization.