Mailock® secure email

Secure email,

made to connect

Exchange confidential information securely using your existing email setup. Encrypt messages and authenticate recipients.

Professionals Sending And Receiving Secure Email Encrypted Message

What's the risk?

"Email is not secure!"

Emails are easily intercepted or sent to the wrong person. That’s why we never use them for confidential data. Mailock empowers businesses and consumers to exchange sensitive information by email, securely.

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Video Intro

What is Mailock?


How will you use Mailock?

sending a mailock pro secure email


Secure client email

Email safely with an easy-use toolset for professionals and teams.

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Secure email gateway

Protect all your business’s sensitive emails with a secure gateway.

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High volume delivery

Deliver customer comms at scale using bulk secure email delivery.

Why Mailock?

Transform communications

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Prevent interception

Prevent interception

Protect customers from email interception and fraud with NSA-grade security. Encrypt off-site data for FCA and ICO compliance.

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Communicate efficiently

“Can’t you just email it to me?!' Exchange sensitive documents easily, instantly, with peace-of-mind that info is safely shared.
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Minimise paper output

Save carbon and save costs by minimising your paper output. Meet your ESG targets and do it with bottom-line impact.

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Reduce human risk

Misfired emails are the #1 cause of data exposure. Reduce risk with recipient authentication and message revoke.



It's a no-brainer!

It’s the ability to send information quickly and easily that adds credibility to our proposition.

 Ben Allen  The Right Mortgage
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Get started

Choose your plan



For 'once in a while' sends

up to 5 sends monthly
Email encryption
Q&A recipient challenges
Outlook add-in (Windows)
Securely reply to messages
Message read notifications


For high volume protection

Package dependent
seat & volume pricing available
Everything in Pro, plus:
Keyword-based encryption
M365/Exchange integration
Advanced delivery analytics
API control & monitoring
Single or multi-tenancy
On-prem/cloud hosting
Automated bulk send

Key features

It's email as you
know it, secured

Free your email data from risk, with email encryption and recipient authentication.



Deliver emails and attachments with AES-256 encryption - the NSA standard for confidential data.



Set authentication challenges to verify your recipients’ identity so only the right people gain access.



Integrate with Windows Outlook and M365. Use alongside your CRM, antivirus, and other mail flow tools.



Keep audit trails for every message and track your recipients’ activity with real-time read notifications.



Sent to the wrong person? Remotely revoke access to emails regardless of your recipient's email provider.



Recipients can encrypt their replies for free. Empower your customers with a secure thread to your business.



Compose a secure email from your desktop, browser, or use rules and keywords to initiate the encryption.



Deliver confidential documents to your customers at high volume with automated secure email delivery.

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101 Guide

What Is Secure Email?

Secure email solutions use email encryption and authentication to protect emails, ensuring they are delivered to the right people.


FAQs, answered

What's encrypted email?

Email encryption is the process of encrypting, or disguising, email content to protect it from being intercepted.

It is a key piece of outbound email security. Encryption is often coupled with identity authentication in secure email solutions to make sure email contents can't be read by anyone other than the intended recipient.

Is email not secure?

Email has been around as long as the internet has and it was never designed to be secure.

When you send an email, it travels through multiple nodes in a network. At any one of these, a threat actor could be present.

It could be at your mail server, the server of your recipient, or somewhere in the middle.

If your email contents are not encrypted, they can be accessed, even manipulated, on the way to your recipients.

Can I encrypt emails?

The most common email clients including Outlook, Gmail, and iOS provide a level of basic outbound encryption.

Mailock brings recipient authentication to email along with additional secure communications features including:

  • military grade encryption
  • trigger word warnings
  • free sends for recipients
  • high-volume delivery

What is secure email?

A layer of encryption is important, but it doesn't protect against the #1 cause of data leaks - human error.

Secure email solutions combine identity authentication with email encryption, so even if you send to the wrong address, the wrong person can't gain access.

This also adds extra protection against threat actors, especially in the event of an inbox takeover attack.

Recipient authentication methods can include device checks, challenge questions, or third-party certificates.

What is Mailock?

Mailock is a secure email solution that enables the safe and compliant exchange of confidential data.

It combines award-winning encryption technology with multi-factor identity authentication to protect confidential emails from cyber risk and keep customer information protected.

* Terms and conditions

  • All prices exclude VAT.
  • Fair usage policy applies to unlimited secure email quotas.
  • Message expiry periods vary by plan as per the FAQ item below.
  • Features, pricing, and data storage periods for enterprise plans vary based on infrastructure, requirements, and the package negotiated with our team.

Our Acceptable Use Policy and End User Agreement apply to all plans.