Mailock Pro is a secure email solution designed for professionals and teams that enables encrypted communication via Microsoft Outlook or a web browser. It is aimed at organisations that need to exchange confidential files and messages while maintaining regulatory compliance. Key functional areas include: **Encryption:** Emails and attachments are secured with end-to-end AES-256 encryption during composition, transit, and delivery. **Recipient Authentication (Challenges):** Senders can select from multiple authentication methods — including SMS codes, question-and-answer, and Unipass ID — to verify that only the intended recipient can access a message. **Data Loss Prevention:** Custom trigger words can be configured to alert the sender when a message may contain sensitive data, prompting them to send it securely before it is transmitted. **Message Tracking & Audit Trail:** A sent message tracker provides an auditable log of all secure emails, including timestamps for when messages were sent and when secured content was opened. Read notifications inform the sender when a message has been accessed. **Message Revocation:** Senders can revoke access to delivered messages at any time after delivery. **Secure Replies:** Recipients can reply securely via the Mailock Outlook add-in or web app, maintaining end-to-end protection throughout the exchange. **Compliance Support:** The product is positioned to assist with GDPR, FCA regulations (including MiFID II, PRIIPs, and Consumer Duty requirements), using encryption and audit trails as supporting controls.