How do I send a secure file by email?

Encrypt the file before sending it, send a protected file link by email, and share the password link through a separate channel. Stormkey performs the encryption locally in the browser.

Does Stormkey store my file in plain text?

No. The file is encrypted locally in the browser. Stormkey does not store the original file or password in plain text.

Can I use Stormkey without installing anything?

Yes. The web version works directly in the browser. For Gmail workflows, Stormkey also offers a Chrome Extension.

Secure email attachments

Send secure files by email without placing the original file in the inbox.

Stormkey encrypts files locally in your browser. You send a protected file link by email and share the password link separately through Signal, WhatsApp, phone, or another channel.

Protect a file

1. Choose a file

The file stays on your device while the browser prepares it.

2. Encrypt locally

Stormkey creates a protected file using AES-256-GCM.

3. Share separately

Send the file link by email and the password link through a second channel.

Why email alone is not enough

Email is convenient, but inboxes are forwarded, synced, searched, and archived for a long time. If the file and password sit in the same thread, the protection is much weaker.

Stormkey separates the content from the transport: the email carries only the protected file link. Access depends on the password and context you share separately.

Best practice: send the protected file link by email, then share the password link through another channel.

Can the recipient open the file without a Stormkey account?

Depending on the flow, recipients can open the protected file through Stormkey. The key point remains: share the password separately.

Is this suitable for customer data?

Stormkey reduces risk during file transport. Whether it fits a specific compliance case depends on your internal rules and data classification.