Mailock® For Outlook

Secure your

Outlook emails

The email encryption Outlook add-in

Upgrade email for sensitive communications with the Mailock add-in for Windows Outlook. Encrypt data and authenticate recipients.

Male professional sending secure emails to his clients on laptop using mailock

Secure Outlook

emails with a click

Protect sensitive data while providing recipients with easy access to information. Our Windows Outlook integration enables you to encrypt messages and attachments, verifying recipients to make sure you reach the right people.

  • Secure outbound emails and replies
  • Prevent ‘wrong recipient’ mistakes
  • Revoke data in the event of a breach
Outlook static GIF - sending a secure email

Outlook send & receive

How it works

1. Send

Start a secure email with the Mailock Outlook add-in, choosing from a range of authentication challenges.

Mailock secure email button on the Outlook ribbon using add-in

2. Receive

Recipients receive a notification in their inbox and must pass your authentication challenge to unlock the message.

Enter the code to unlock your secure email in the Mailock Outlook add-in

3. Reply

Replying is easy - recipients can use Mailock for desktop or web to keep sensitive messages and files secure.

Secure read pane in Mailock web app after receiving a secure email in Outlook
Mailock secure email button on the Outlook ribbon using add-in
Enter the code to unlock your secure email in the Mailock Outlook add-in
Secure read pane in Mailock web app after receiving a secure email in Outlook

Security

Protect your

email exchanges

Secure emails and replies

Initiate encrypted email exchanges with a single click, authenticating recipients to guarantee a secure connection. Safeguard messages and attachments on delivery and when your recipients reply.

Couple sending a secure email reply

Prevention

Stop email mistakes

before it's too late

Trigger sensitive data alerts

Avoid the most common type of data breach - sending an email to the wrong people. If Mailock finds sensitive data, it will ask you to confirm its security before sending.

Trigger word warning in Outlook using the Mailock add-in

Compliance

Revoke you

can rely on

Lock emails sent in error

Outlook’s native email recall only works in a limited few scenarios. Comply with regulatory guidance on locking down data during a breach. Mailock gives you message revoke that works every time.

Professional male in office using the Mailock Outlook add-in revoke function

Compared


pricing-icon

Outlook

Microsoft Message Encryption

Basic protection for everyday emails
End-to-end encryption
Recipient authentication
Sensitive data alerts
Message audit trails
Message revoke
Read notifications
Engagement analytics
High volume delivery

Testimonial

It's a no-brainer!

It’s the ability to send information quickly and easily that adds credibility to our proposition. That's important. Secure email works for us, our advisers, and our clients.

Ben Allen The Right Mortgage
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Features

The Outlook add-in for outbound risk

Encrypt confidential emails and authenticate recipients with our secure email encryption add-in for Windows Outlook.

Email icon

Compose

Send secure emails from Windows Outlook. Click the Mailock icon to compose an encrypted email and set your recipient authentication.

Encryption icon

Encrypt

Deliver emails and attachments with end-to-end AES-256 encryption - virtually impenetrable protection for sensitive data.

Data warning icon

Prevent

Catch sensitive emails before it's too late, with custom trigger words. If they're included in a message, you'll be alerted to send it securely.
Customer identity icon

Challenge

Verify untrusted contacts using a range of multi-factor authentication challenges including question-and-answer, SMS, and Unipass ID.

Read notification icon

Monitor

Read notifications and message analytics tell you when secure emails are opened, so you can follow up at the right time.
Lightbulb icon

Engage

Recipients reply securely for free. Empower clients with an encrypted thread to your business.
Magnifying glass

Audit

The sent message tracker provides an auditable record of all your secure emails, detailing if and when they were accessed.
Revoke icon

Revoke

Revoke secure emails even if they've been opened, regardless of whether your recipient is using Outlook, Gmail, or another provider.

Download the Outlook
Add-In Data Sheet

250K+
Users
2.1K+
Companies
1.6M+
Recipients
man helping colleague to use secure email system

Questions?

Talk to us

Book a demo with our team to see Mailock in action and get your questions answered.

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Questions?

FAQs, answered

What is Mailock for Outlook?

Mailock for Outlook is an email encryption add-in that allows you to secure your emails and authenticate recipients directly within your Outlook client on Windows.

How does Mailock ensure the security of my emails?

Mailock encrypts your emails and attachments with end-to-end encryption, ensuring that only the intended recipient can access the content. It also provides authentication challenges to verify the recipient's identity.

Can recipients reply securely to my encrypted emails?

Yes, recipients can reply securely using Mailock, even if they don't have a Mailock account. They can read and respond to your secure messages without any additional cost.

How do I revoke a sent email using Mailock?

If you need to revoke an email sent in error, Mailock allows you to do so even if the recipient has already opened it. This helps in containing potential data breaches.

What are trigger words and how do they work?

Trigger words are customisable keywords that, when detected in your email, prompt you to encrypt the message before sending. This feature helps prevent accidental exposure of sensitive information.

Is Mailock compliant with data protection regulations?

Yes, Mailock helps you comply with data protection regulations such as GDPR by encrypting personal information and providing audit trails for email interactions.

Operating requirements

Mailock works with any modern web browser on any device. As long as your browser is up-to-date, there is a good chance you can use Mailock.

To use our Outlook add-in, you need the classic desktop version of Outlook for Windows (see how to check).

This commonly comes with Microsoft 365 Business Standard subscriptions or higher tiers. Standalone copies like Office 2019 also work.

Our add-in works with any actively supported version of classic Outlook on any supported version of Windows (see Microsoft's end of support documentation).

Mailock Enterprise plan holders can use secure email with any mail flow through a number of integration options with our support.