Mailock® Free
Free secure email
For individual light users
Send information securely by encrypting your emails and authenticating recipients.
5 secure sends per month
Unlimited secure replies

Free secure email
Encrypt emails
from any device
Easily secure sensitive emails and files at no cost with our Outlook add-in or web app.
- End-to-end email encryption
- Q&A recipient authentication
- Free secure replies for recipients
Q&A authentication
Reach the right
people, only
Verify recipients by requiring them to answer a security question to access your emails.
- Protect personal information
- Prevent email interception
- Comply with the GDPR
Testimonial
Perfect for exchanging sensitive documents
Sending documents back and forth is easy, and it's secure, unlike post, which can be intercepted or sent to the wrong address.
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Get started
Create an account
Our free secure email account gives you unlimited secure message replies and a monthly allowance of secure sends.
Questions?
FAQs, answered
What is included in a Mailock Free account?
A Mailock Free account lets you send up to 5 secure emails per month and reply to secure emails without limits. It includes features such as end-to-end encryption, recipient authentication through email verification and challenge questions, and access via the Mailock web app or Outlook add-in.
How do I send a secure email using Mailock Free?
To send a secure email using Mailock Free, you need to register for a free account on the Mailock homepage. Once registered and signed in, select the 'Compose' option. You can then write your email and add a mandatory challenge question to authenticate the recipient. The system provides a panel to track how many secure emails you have left to send for the month.
What are the benefits of upgrading to Mailock Pro?
Upgrading to Mailock Pro offers several key benefits including unlimited secure email sends, the ability to protect emails with an SMS challenge, email revocation, advanced audit features, and customised company branding on emails. Additionally, Mailock Pro provides enhanced security features such as misdirected email protection, message expiry extended to 365 days, and shared email access across Mailock accounts within your company.
Key Concepts

How to Send a Secure Email (Encryption Options, Passwords, & MFA)
Learn how to send a secure email using TLS, encrypted files, or end-to-end email tools like Mailock. Keep messages private and compliant.

What Is Encryption? A Simple Guide for UK Businesses and Consumers
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TLS Email Encryption, Explained
Learn the essentials of TLS email encryption, its benefits, limitations, and how to implement it effectively for secure email communication.