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  • Zero-knowledge encryption software

Zero-knowledge encryption to protect sensitive emails

Only the best-in-class encryption is robust enough for sensitive emails and files.

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What it does

Improve the security of your email client with integrated zero-knowledge encryption.

Email was never designed to be secure. Prevent the leading causes of data loss and email with total confidence by enhancing Outlook, M365, or Gmail with integrated zero-knowledge encryption.

  • Unlike other email security providers, we don’t hold decryption keys - meaning only you and your recipient can access your data
  • Send and receive secure emails by enabling two-way secure emailing with stakeholders, including third parties without Zivver accounts
  • Combined with data loss prevention controls, zero-knowledge encryption enhances email with all the tools you need to meet compliance requirements
How it works

Enhance M365, Outlook, and Gmail with zero-knowledge encryption

Zivver applies AES 256-bit encryption to emails, providing unbeatable protection against unauthorized access. Plus, AES 256-bit encryption is believed to be unbreakable for quantum computers - providing added assurance that your data is safe now and in the future.

Best-in-class encryption

Protection throughout your email’s journey

Zivver uses TLS 1.2 and TLS 1.3, depending on the capabilities of the user (RFC 5246), meaning your data remains safe from the moment you click send.

For every secure email, including guest account conversations, an AES-256-CTR encryption key is used to protect the message content. The unique encryption key for each conversation is further secured by encrypting it with a separate key specific to the guest conversation.

EN - ZVR24 - 11 - Features - Zero Knowledge Encryption - Best in class
EN - ZVR24 - 11 - Features - Zero Knowledge Encryption - Protect any email or file

Protect every email and file

Encryption for attachments

Large file transfer sites aren’t always compliant or convenient, for employees or their recipients.

Regardless of size, if it’s sensitive - encrypt it. Zivver enables secure large file transfer up to 5TB from email. Contracts, PII, healthcare data - whatever you need to share, send it by email with zero knowledge encryption.

Extra protection

Manage access to your sensitive data

Zivver provides legally verifiable Proof of Delivery, enabling you to keep track of the status of emails. Apply 2FA and expiration controls, according to your organization’s privacy policies, to manage access to your data even after sending.

Right-sized security and data loss prevention controls ensure your emails are protected according to their sensitivity.

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Over 10,000 companies email securely with Zivver

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“For sharing personally identifiable information, for example, or financial information with contractors, Zivver ensures data is protected. The ability to share large files directly from Microsoft 365 is also very helpful. While compliance wasn’t the main reason for implementing Zivver, it is very important. We can access data and reporting on user activity in the back end, including some interesting statistics regarding data incidents avoided. We can even see when emails have been recalled. This data supports us in meeting compliance.” 

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James Ryan, Infrastructure Manager
Soha Housing

Ready to learn more?

Learn how Zivver can help you with secure email and effortless compliance

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Zero Knowledge Encryption FAQs

Whatever you need to know, we’ve got the answers.