Mailock® For M365
Outbound email
security for M365
Deliver securely with Microsoft 365
Extend M365 to exchange sensitive information by email with the confidence that only the right people can gain access.
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Microsoft integration
Tightly integrated
with Microsoft 365
Use our Windows Outlook add-in to send and receive secure emails from your desktop. Integrate our secure email gateway with your 365 Exchange for company-wide protection and high volume digital delivery.
- Desktop add-in for individual secure emails
- Exchange integration for high-volume delivery

What's M365's Encryption?
Top tier Microsoft 365 plans (e.g., E5) offer customers access to Microsoft Purview Message Encryption (MPME), part of the Azure Information Protection suite. MPME uses email encryption to increase the chance of an email reaching the right person without it being intercepted.

When MPME isn't enough
As our partners at Microsoft say, the rights management suite is designed to be used "to prevent accidental misuse and is not a security boundary." They also discourage the delivery of encrypted email at high volumes, with rate limits designed to curtail usage.

Recipient authentication
Challenge recipients
protect information
Mailock expands Microsoft's native capability to verify recipient inbox access with identity authentication that proves they 'are who they say they are'.
- SMS: Send a one-time-code
- Q&A: Ask a custom question
- Unipass ID: Authenticate Unipass ID

Unilateral revoke
Revoke you
can rely on
While you can request to revoke an encrypted email (in certain scenarios) using Microsoft's native tools, it's down to the sender to accept. Mailock revokes secure emails unilaterally to lock down breaches.

Trigger words
'Before you send'
breach prevention
Customise our preset list of trigger words, which, if present in an unsecured email, will surface a prompt asking you to secure it. Build a data loss protection profile that reflects your security policy.

Scaled delivery
Send secure email
at high volume
Whether you need to secure email exchanges between your contact centre and customers or switch your confidential print-and-post output to secure email, Mailock can keep your communications secure. There are no imposed limits on volume or throughput for secure email sent using our network.
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Fulfil your compliance obligations
ICO - GDPR
"Have a policy governing encrypted email, including guidelines that enable staff to understand when they should or should not use it. For example, there may be a guideline stating that any email containing sensitive personal data (either in the body or as an unencrypted attachment) should be sent encrypted."
"[in the event of a data breach] act quickly. Try to recall the email as soon as possible. If you can’t recall it, contact the person who received it and ask them to delete it. The 72 hours following a personal data breach are particularly critical."
FCA - COBS
ESMA - MIFID II
"Have sound security mechanisms in place to guarantee the security and authentication of the means of transfer of information, minimise the risk of data corruption and unauthorised access and to prevent information leakage maintaining the confidentiality of the data at all times.”
At a glance
M365 vs Mailock
M365
Mailock
Easy Integration
Plug 'n' play
secure comms
Mailock is designed to work seamlessly with other 365 integrations, leaving your emails accessible to data loss prevention and server-side signature tools.
- On-premise deployment support
- Fully managed cloud service

Secure replies
Empower customers
to reply securely
Recipients can read messages and download attachments without creating an account, then connect their email to reply for free.
- Customers read-and-reply free
- Read-without-registration

The recipient experience
1. Receive
Recipients receive a notification email to let them know they have a secure message waiting to be opened. This message can be customised with your company branding or use the familiar Mailock template.
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2. Identify
Recipients click ‘Open’ on the notification delivered to their inbox. They’ll answer any challenges that have been set, or if they're trusted, they can open and read right away.

3. Reply
If recipients need to reply to a secure message, they can use Mailock to compose, attach, and send using their existing email address and account. They'll even get a limited number of secure emails to send.

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Testimonial
Mailock removes a lot of the risk and GDPR concern
around dealing with everyone’s favourite communication method - email. We can send and receive our clients' information safely.

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Features
Protect email data.
Free your comms.
Turn email into a secure communications channel that drives customer engagement, efficiency, and cost savings.
End-to-end encryption
Recipient authentication
Trigger words
Audit trails
Message revoke
Read notifications
Engagement analytics
High volume delivery
Support for high-volume delivery means no hard ceiling on message volume or message throughput.
Multi-tenancy/brand
Custom branding
Download the Mailock
Enterprise Data Sheet
Make an impact
Turn email into your greatest power
Transform communications, meet business goals, and make email a force for good.
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Increase efficiency
Save time spent sending sensitive information back and forth between colleagues, partners, and clients. Speed is key to a positive customer experience according to PWC reports.
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Save paper
Let’s reach Net Zero goals together, with innovation. Reduce your paper document output by taking sensitive document exchanges digital. Save carbon and do it with bottom line impact.
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Protect data
Free your business from open-risk email. Protect messages and files from cyber threat and human error. Exchange documents with customers and keep their data safe in line with GDPR.

Mailock compared
Read the full review: M365 encryption vs Mailock
Read our article comparing Microsoft's Purview Message Encryption with Mailock for secure customer communications.
Case studies
Hear from our users

Securing Client Communications At Stonebridge Financial
Find out how Stonebridge Financial secured their email communications using Mailock, driving efficiency and engagement with their clients in the process.

Securing Client Communications At Thanks Wealth Planning
Personal information is abundant within financial services. This case study shows how Thanks Wealth Planning increased security for their communications.