What type of encryption does Zivver use to protect my data?

Zivver uses AES-256 encryption, one of the most secure encryption standards available, to protect your data both in transit and at rest. Additionally, Zivver employs keyless encryption, meaning that only the sender and recipient have access to the encryption keys, ensuring that even Zivver cannot access the content of your communications.

Can Zivver access the content of my encrypted emails?

No, Zivver cannot access the content of your encrypted emails. Zivver uses keyless encryption, meaning that only the sender and recipient have the keys needed to decrypt the content. This ensures that your data remains private and secure, even from Zivver.

What is the difference between TLS encryption and end-to-end encryption in Zivver?

TLS encryption secures the transmission path between email servers, ensuring that data cannot be intercepted during transit. End-to-end encryption, on the other hand, secures the content of the email itself from the moment it leaves the sender’s device until it is opened by the recipient. Zivver uses both methods: TLS to secure the transmission and AES-256 for end-to-end encryption to ensure that only the intended recipients can access the content.

Transport Layer Security Software

Features
Transport security email software

Transport Layer Security for every email

Protect every email and file attachment with enforced transport security

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What it does

When it comes to protecting data in transit, Transport Layer Security is a failsafe measure that ensures every email leaving your server is secure and protected against unauthorized access - something you can’t guarantee with standard email.

Opportunistic TLS (the standard level of encryption provided by most email clients) isn’t failsafe. Zivver enables you to send all your emails with a minimum level of security at all times, to guarantee your data is protected.
Meet compliance with evolving data protection regulations by enhancing your email client and enabling transport layer security for every sensitive email.
Email securely, safe in the knowledge that your data is protected against common malicious threats, including man-in-the-middle attacks.

How it works

Transport security without the downsides

If the recipient’s mail server supports a minimum level of transport encryption and server authentication, Zivver can deliver secure messages directly. If not, they can still be accessed via our portal.

Encrypted in transit

Every Zivver message is encrypted and sent securely

Enforced TLS ensures that emails are encrypted during transmission, preventing unauthorized access during transit - crucial for protecting sensitive data from being intercepted.

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100% Deliverability

Ditch opportunistic TLS, without worrying about delivery

When it comes to normal email, enforcing TLS obviously has it’s downsides in deliverability. With Zivver, if your message can’t be sent via TLS through traditional email, it will be sent to your recipients via our secure portal, completely encrypted and secure.

Explore the platform

Close the other tabs. Zivver Secure Email platform provides a suite of secure integrations to power productivity:

Secure Email

Email sensitive data securely with Zivver Secure Email solution. Secure email integration for Outlook, M365, and Gmail.

Learn more

Secure Gateways

Protect sensitive emails and ensure compliance with Zivver DLP and Encryption Gateways.

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Secure Large File Transfer

Close the other tabs and share every file, no matter the size, by email.

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Over 10,000 companies email securely with Zivver

“When we were looking at switching suppliers, I needed to get the buy-in from the security team. Every stakeholder could see how Zivver would support us in meeting our compliance responsibilities, and support better security practices in general.”

Zahid Zarin, Information & Digital Services Manager
Hertsmere Borough Council

Ready to learn more?

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

Book a demo Pricing

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Frequently asked questions

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

Zivver uses AES-256 encryption, one of the most secure encryption standards available, to protect your data both in transit and at rest. Additionally, Zivver employs keyless encryption, meaning that only the sender and recipient have access to the encryption keys, ensuring that even Zivver cannot access the content of your communications.
No, Zivver cannot access the content of your encrypted emails. Zivver uses keyless encryption, meaning that only the sender and recipient have the keys needed to decrypt the content. This ensures that your data remains private and secure, even from Zivver.
TLS encryption secures the transmission path between email servers, ensuring that data cannot be intercepted during transit. End-to-end encryption, on the other hand, secures the content of the email itself from the moment it leaves the sender’s device until it is opened by the recipient. Zivver uses both methods: TLS to secure the transmission and AES-256 for end-to-end encryption to ensure that only the intended recipients can access the content.

Resources

Latest news and expert views

Access all our latest thinking, expert insights, and more.

Resources hub

Webinar

1 min read

Security Spotlight: How to create a positive culture around security

There is mounting pressure on organizations to assess their email security under regulations including GDPR, NIS2 and DORA. The tools we use every day to manage sensitive data must reach the standards...

Learn more

Email Security Trends 2025 featured image

White Paper

min read

Email Security Trends 2025

We interviewed over 400 IT leaders and 2000 employees across the UK, USA, and Europe to uncover the latest insights, priorities and opinions into the state of email security.

Learn more

Security Spotlight: How to build a positive security culture featured image

Webinar

20 min read

Security Spotlight: How to build a positive security culture

Learn how to positively engage employees in information security with special guests, Inge Wetzer, Social psychologist in Cybersecurity & Compliance at Secura and Nadine Hoogerwerf, CISO at Zivver.

Learn more

Zivver secure email

Solutions

Resources

About us

Transport security email software

Transport Layer Security for every email

Transport security without the downsides

If the recipient’s mail server supports a minimum level of transport encryption and server authentication, Zivver can deliver secure messages directly. If not, they can still be accessed via our portal.

Encrypted in transit

Every Zivver message is encrypted and sent securely

100% Deliverability

Ditch opportunistic TLS, without worrying about delivery

Explore the platform

Close the other tabs. Zivver Secure Email platform provides a suite of secure integrations to power productivity:

Secure Email

Secure Gateways

Secure Large File Transfer

Over 10,000 companies email securely with Zivver

Ready to learn more?

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

Frequently asked questions

What type of encryption does Zivver use to protect my data?

Can Zivver access the content of my encrypted emails?

What is the difference between TLS encryption and end-to-end encryption in Zivver?

Latest news and expert views

Access all our latest thinking, expert insights, and more.

Security Spotlight: How to create a positive culture around security

Email Security Trends 2025

Security Spotlight: How to build a positive security culture

Contact us today