Mailock is a secure email platform developed by Beyond Encryption that encrypts email messages and attachments before they are sent, and verifies the identity of recipients before allowing access. When a secure email is sent via Mailock, the recipient receives a notification in their inbox indicating that a secure message is waiting for them. To access the message, the recipient must pass an authentication challenge selected by the sender. Authentication challenge options include: - Security questions (Q&A challenges) - SMS-based one-time codes sent to a mobile device - Third-party certificates This mechanism is designed to prevent unauthorised access in the event a message is delivered to the wrong inbox, as only the verified intended recipient can decrypt and read the content. Mailock is available in three tiers: - Free: Allows a limited number of secure emails with Q&A recipient authentication - Pro: Designed for professionals, covering everyday client-facing emails against cyber threats and human error - Enterprise: Covers all business email exchanges, includes BI/MI analytics, and supports compliance requirements The platform positions itself as a tool for reducing reliance on physical document exchange by enabling instant, secure digital document sharing. It is intended for both individual users and organisations that need to communicate sensitive information via email.