Mailock® Free

Free secure email
for a safer world

Exchange private information safely

Exchange confidential information over email, easily and securely. Protect messages and attachments with advanced encryption and authentication.

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Secure email
on any device

No need to switch email providers

Send secure emails and attachments from Windows Outlook or the web. Securely exchange data without leaving your inbox.

  • End-to-end email encryption
  • Q&A ID authentication
  • Recipients reply free
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Always hit your mark

Reach the right people, only

Verify your recipients' identity before they can open your secure email. Use a challenge question - a question they must correctly answer to gain access.

  • Comply with regulatory guidance
  • Prevent unauthorised access
  • Protect personal information
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97K
Users
1.8K
Companies
450K
Recipients

Better businesses, happier customers

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Protect data

Protect data

Are your emails confidential? Mailock uses end-to-end encryption to prevent email interception.

Prevent misfires

Reduce admin

No need to post your document to get confirmation of delivery. Mailock read receipts have you covered.

Prevent misfires

Prevent misfires

Secure messages and attachments with a challenge question, so only the intended recipients can gain access.

Save carbon

Save carbon

Why waste paper when you can send documents faster, more efficiently, and more securely with Mailock.

Features

Encrypt emails and attachments at the click of a button

Protect data and maintain compliance with secure email encryption and authentication for sensitive comms.

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Compose

Send secure emails from Outlook Desktop or the web. Click the Mailock icon to compose an encrypted email and set an authentication method.
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Challenge

Select from a range of multi-factor authentication options. Set question and answer challenges to make sure only the right people open your emails.

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Encrypt

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

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Empower

Recipients reply securely for free - empower customers with an encrypted channel to your business.
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Start free

Get started

Our free plan gives you unlimited replies and 5 secure sends each month.