How CIPH4 compares against email, file-sharing SaaS, and data-room vaults
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Why teams switch from email and vaults.
If you've ever sent a sensitive PDF as an email attachment, this is the upgrade. If you've ever provisioned a data room for one wire instruction, this is the downgrade in cost, not control.
✓ Yes· ✗ No· ~ Partial (available via add-on, optional config, or limited shape).
| Feature | CIPH4 | Email + PDF | File-sharing SaaS | Data-room vault |
|---|---|---|---|---|
| Encrypted in your browserA server-side breach yields ciphertext only — your data never reaches us in readable form. | Yes | No | Partial | Partial |
| Decryption key never on serverNo master key for us to leak, subpoena, or accidentally log. | Yes | No | No | No |
| Signed deletion receipts (Enterprise)Your auditor gets a portable proof of destruction, verifiable on our public /verify page. | Yes | No | No | Partial |
| Burn-on-readThe file is gone before it can be forwarded, screenshot-shared, or quietly archived. | Yes | No | Partial | No |
| Public deletion-receipt verifierDrop any Ed25519-signed receipt into our public /verify page to confirm the signature — no account required. | Yes | No | No | No |
| Per-recipient watermark (Enterprise)Every recipient sees a unique mark on the document — if it ever surfaces somewhere it shouldn't, you know exactly who leaked it. | Yes | No | Partial | Partial |
| Bring-your-own KMS (Enterprise)Your KMS wraps the encryption key. We can't unwrap without your permission — revocation and residency stay with you. | Yes | No | Partial | Partial |
| Setup timeFrom signup to first encrypted share. No procurement cycle, no implementation sprint, no governance gap while you wait. | 5 min | instant (but unsafe) | 1–2 days | weeks |
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20 free links a month, no credit card. When you need single sign-on, compliance templates, or signed deletion receipts your auditor can verify — we'll talk.