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Integrations > Outlook

Secure your

Outlook emails

Secure email add-in for Outlook

Protect sensitive messages and attachments and verify recipients, all without changing how your team composes email in Outlook.

or, install the Outlook add-in
Male professional sending secure emails to his clients on laptop using mailock

Protect sensitive

email in a *click*

Compose in Outlook as usual. Switch on Mailock, choose the recipient check that fits the message, and send securely for a branded, recipient experience.

  • Protect messages and attachments
  • Flexible recipient-authentication checks
  • Receive secure replies
Sending a secure email in Outlook with the Mailock add-in

Outlook send & receive

How secure sending works

1. Send

Compose in classic Outlook as usual, then select the Mailock secure toggle from the ribbon.

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

2. Authenticate

Choose a recipient check such as email verification, SMS, Q&A, or Unipass ID where available.

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

3. Reply

Recipients can read and reply through Mailock on the web or in a supported Outlook setup, keeping sensitive content inside the protected exchange.

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 the whole

email exchange

Secure messages, attachments, and replies

Mailock uses AES-256 encryption to help protect sensitive content. Add a recipient check when needed, and keep replies inside the protected Mailock experience.

Couple sending a secure email reply via the Mailock web app

Sender safeguards

Get a prompt

before you send

Keep secure delivery front of mind

Mailock security alerts can prompt senders when configured terms are detected, helping teams remember to protect sensitive emails before they leave Outlook.

Security alert warning in Outlook using the Mailock add-in

Post-send control

Stay in control

after you send

Close access when circumstances change

If an email goes to the wrong address, includes the wrong attachment, or needs to be withdrawn, Message Revoke lets the sender close future access to the protected Mailock message - including after it has been opened.

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

Testimonial

Click the Mailock button and off you go!

The Mailock secure email toggle just sits there in Outlook - you click secured or unsecured, and off you go.

Chris Pinkney Business Director
Wealth planning meeting to discuss Outlook email encryption usage and savings
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Features

Mailock features for Outlook

Give senders practical controls before, during, and after delivery from a workflow they already know.

Email icon

Compose

Compose in classic Outlook as usual, then select Mailock and choose the recipient check for the message.

Encryption icon

Encrypt

Protect sensitive messages and attachments with AES-256 encryption.

Data warning icon

Prompt

Use security alerts to prompt secure delivery when configured terms are detected.

Customer identity icon

Authenticate

Choose recipient checks such as email verification, SMS, Q&A, or Unipass ID where available.

Magnifying glass

Track

Message Tracker helps senders see when secure messages have been accessed.

Revoke icon

Revoke

Close future access to a protected message, including after it has been opened.

Ready to use Mailock in classic Outlook for Windows?

Install the add-in to bring secure sending into the Outlook ribbon.

More about Mailock

Choose your next step

Colleagues comparing Mailock plans

Pricing

Mailock pricing plans

Compare current Mailock plans to find the right option for your sending workflow.

Adviser using Mailock to send secure email to clients

Mailock Pro

For professionals and teams

Use Mailock Pro in classic Outlook for Windows or through the Mailock web app.

Financial adviser looking at screen with Mailock email on

Use Cases

For financial advisers

See how Mailock helps advisers protect sensitive client communications.

Man helping colleague to use secure email system

Questions?

See Mailock in your Outlook workflow

Book a demo to walk through secure sending, recipient checks, replies, Message Tracker, and Revoke with our team.

Questions?

FAQs, answered

Which versions of Outlook work with the Mailock add-in?

The Mailock add-in is designed for supported classic desktop Outlook on Windows. It does not currently run inside new Outlook, Outlook on the web, Outlook for Mac, or Outlook mobile. Recipients can use Mailock through a browser and do not need the Outlook add-in.

What does Mailock add alongside Microsoft email encryption?

Mailock gives senders a dedicated external secure-email workflow with selectable recipient checks, secure replies, Message Tracker, and Message Revoke. It works alongside Microsoft 365's native encryption and rights-management controls.

How much does Mailock Pro cost?

You can start a free 14-day Mailock Pro trial. Review current subscription options on the pricing page.

How do recipients read and reply to a Mailock message?

Recipients can read and reply through the protected Mailock browser experience, so they do not need Outlook or the add-in. The access steps vary according to the recipient check and your organisation's settings.

What happens when a Mailock message is revoked?

Message Revoke closes future access to the protected message. It cannot recover information already downloaded, copied, photographed, or otherwise retained outside the Mailock experience.

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