For business

Secure file sharing with just an email address

Just specify an email address to lock files so only that person can open them. No passwords to create or send, and no setup needed for receivers.

Following the government's PPAP ban, nearly half of businesses have already stopped using password-protected ZIP files.

Why Kagisuru

No passwords, just email

Senders just specify an email address. Receivers just click a link. No password exchange at all.

Any channel, safe

Email, chat, or storage. Locked files stay encrypted no matter how you send them.

Zero receiver burden

No account creation needed in advance. Receivers open files in a browser, regardless of their IT setup.

Trusted security

Zero-trust architecture

Unencrypted files are never stored on servers. Even our team cannot access file contents.

FIDO2 / Passkey auth

International standard used by Google, Apple, and Microsoft. Biometric authentication ensures identity.

Encrypted on your device

All locking and unlocking happens on your device. Unencrypted files never leave your computer.

Business features

Groups

Lock and receive files by team. Publish a receive page for partners to send files securely.

Access log

Track who unlocked files and when. Useful for delivery confirmation and audits.

Revoke access

Make files unopenable after sending. Post-incident control not possible with password ZIP.

Get started quickly

Start same day

Browser-based, no installation needed. Start from an invite email. Outlook add-in available.

Use existing tools

Email, Slack, Teams, LINE, Google Drive, SharePoint. No workflow changes needed.

Simple pricing

Annual plan, unlimited usage, zero setup cost. No cost for receivers either.

Resources for your team

Articles for different stakeholders in your organization.

Get in touch to learn more

Contact us

Download materials here