Zero‑Knowledge Encryption
Files and metadata are encrypted at rest & in transit. Even secure-transmit can't access them without your keys.
Massive File Support
Send files up to 4 TB effortlessly using chunked AWS S3 uploads.
Multi-Factor Recipient Identity
Choose from email code, SMS OTP, passkeys, password, or public key verification.
Cryptographic Delivery Logs
Get tamper-proof, signed receipts for every transfer.
Real-World Use Cases for Secure, Verifiable File Transfer
Legal & E‑Discovery
Securely send contracts, case files, or evidence with full cryptographic tracking.
Healthcare
Transfer sensitive patient data, imaging files, and lab results in compliance with HIPAA.
Finance & Accounting
Transfer tax docs, portfolios, and client data with proof of delivery.
Professional Services
Secure one-off or intermittent document, diagram, or video transfers.
Why It Matters
Unlike email or cloud file-sharing apps, secure‑transmit is purpose-built for confidential, regulated, and high-risk transfers—providing audit trails, auto-expiry, and full metadata privacy.
Every Feature Designed for Security, Compliance, and Ease
Zero-Knowledge Encryption
Data and metadata is encrypted at rest and in transit.
Multi-Factor Recipient Verification
Choose passkey, email OTP, SMS code, password, or public key per recipient.
Massive File Support
AWS multi-part file transfers.
Auto-Expiry & Privacy Enforcement
Set files to self-destruct; data and logs auto-delete, no residual footprint.
Tamper-Proof Audit Logs
Each upload/download event is logged – and the audit log is cryptographically signed.
Per-Recipient Notes & Instructions
Attach private messages tailored to each recipient.
Flexible Account Models
Anonymous small transfers, prepaid pay-as-you-go, or pre-funded team accounts (with proxy access).
Integrity Verification
MD5/SHA-256 hashing ensures no file corruption or tampering.
Browser-Based – No Install
Works across devices—no plugins, no setup.
How secure-transmit Works
From Upload to Proof of Delivery
1
Set up your Transmission
Choose your Sender and Recipient(s) – and input your transmission information.
2
Upload
Sender uploads the data – at least one file – across a secure AWS channel without needing any software or account.
3
Download
Only Recipients that you named can access the files – after they have verified their identity.
4
Auto-Delete and Audit Logs
Files auto-delete as per the expiration time that you set (but no longer than 30 days). You can view the audit logs at any time during the process – and depending on your payment selection, you can receive cryptographically signed receipts and access logs.
