Mailock® For Outlook
Secure your
Outlook emails
The email encryption Outlook add-in
Encrypt Outlook emails and set recipient authentication challenges with our email encryption add-in for Windows.

Outlook secure send
How it works
1. Encrypt
Click the ‘Secure Email’ button in Outlook, compose your message, and hit ‘send’. Set a challenge so only the right people gain access.
2. Connect
Recipients click ‘Open’ on the notification delivered to their inbox. They’ll answer your challenge, or if they're trusted, they can read right away.
3. Engage
If recipients need to respond to a secure message, they can use Mailock to compose, attach, and reply using their existing email address and account.
Outbound security
Extend Outlook for
outbound security
Prevent interception and fraud
Protect confidential information with an email encryption Outlook add-in to cover you against outbound email risk.
- Multi-factor authentication
- 'Before you send' trigger alerts
- Full message and attachment revoke
(regardless of receiving email client)
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Authentication
Check recipient
identity for access
Set authentication challenges
Ask your recipients to prove they 'are who they say they are' to gain access to sensitive emails you send them in Outlook.
- SMS: Send a one-time code to your recipient's mobile device.
- Q&A: Ask your recipient a question only they could correctly answer.
- Unipass ID: Allow financial professionals to verify their ID using Unipass.
Trigger words
Stop email mistakes
before it's too late
Get sensitive data alerts
Customise our preset list of trigger words that surface a ‘sensitive data’ alert if present in an email. Click a button to secure an Outlook message before it sends.

Message revoke
Revoke you
can rely on
Lock down emails sent in error
Outlook's native email recall works in a limited few scenarios. Mailock gives you the power to revoke secure messages unilaterally to contain a data breach.

Outlook email compliance
Fulfil your obligations
Encrypt personal information (GDPR)
Record proof-of-delivery (MIFID II)
Protect customers (Consumer Duty)
Are you encouraging customers to send their information into your business unsecured? The FCA Consumer Duty is a mandate to provide easy-to-understand communications and protect customers from financial harm.
Testimonial
We can send and receive our client information safely. That's important.
Mailock removes a lot of the risk and GDPR concern around dealing with everyone’s favourite communication method - email.

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Features
The best Outlook add-in for email risk
Encrypt confidential emails and authenticate recipients with our secure email encryption add-in for Windows Outlook.
Compose
Encrypt
Deliver emails and attachments with end-to-end encryption - the NSA standard for classified data. Don't leave your data open to risk.
Challenge
Select from a range of authentication methods. Set SMS or question-and-answer challenges to make sure the right people gain access.
Prevent
Empower
Audit
Revoke
Auto-decrypt
Download the Outlook
Add-In Data Sheet
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Blog post
The Best Outlook Add-ins You Didn't Know You Needed
Microsoft Outlook can be made pretty powerful with some add-ins. We break down the best Outlook add-ins for productivity, security, and collaboration.
Case studies
Hear from our users

Boosting Security And Engagement At Rapport Financial Strategists
This case study shows how Rapport Financial Strategists improved the security and effectiveness of their client communications using Mailock secure email.

Brearley Law Puts The Protection Of Client Data First With Mailock
According to the most recent ICO statistics, the UK legal industry is responsible for 8% of total data breach incidents reported in the past year.