Mailock® secure email

Secure email,

made to connect

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

Professionals Sending And Receiving Secure Email Encrypted Message


What is Mailock?


How will you use Mailock?

sending a mailock pro secure email


Secure client email

Protect email exchanges from cyber threat and human error with email encryption and ID authentication for business emails.

Woman smiling in offer using laptop to secure emails next to colleagues (1)


Outbound email security

Secure all your organisation's sensitive email exchanges. Get BI/MI analytics. Protect critical customer data and boost compliance.

IT team member looking at computer with email encryption (1) (1)


Secure delivery at scale

Deliver high-volume confidential customer communications by secure email. Cut costs, increase security, heighten engagement.

Why Mailock?

Transform communications

Professionals Standing In A Room Clapping For The Benefits Of Mailock Secure Email At Conference
Prevent interception

Prevent interception

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

Customer focus icon

Communicate efficiently

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

Minimise paper output

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

Data warning icon

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
Financial Services CEO Sitting On Wall With City Backdrop Smiling On Phone With Laptop (1) (1)

Get started

Choose your plan



Free secure email

Limited to 5 sends monthly
Email encryption
Outlook add-in (Windows)
Question-and-answer challenge


Secure client comms

per user monthly (+VAT)
Everything in Free, plus:
Unlimited secure emails
SMS code challenge
Unipass ID challenge
Message revoke
Custom trigger words
Company branding

Key features

It's email as you
know it, secured

Free your email data from risk, with email encryption and multi-factor authentication.



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



Set authentication challenges (email verification, SMS, Q&A, Unipass) so only the right people can open.



Integrate with Windows Outlook and M365. Use alongside your CRM, antivirus, and server-side signature.



Keep audit trails of message activity (e.g., open, revoke). Get read notifications so you can follow up.



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



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



Compose a secure email from your desktop or browser, or pipe in your document output to secure at scale.



Deliver confidential documents to your customers in high volumes with automated digital recorded delivery®.

man explaining secure email to colleague

101 Guide

What Is Secure Email? Guide To Email Encryption And Authentication

Secure email solutions use email encryption and identity authentication to protect email contents from interception and manipulation, ensuring messages are delivered to the right people.


FAQs, answered

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.