Smartlockr Secure Email is an email security solution designed for municipalities and government organizations to communicate securely and share large files. The platform enables users to send files up to 5TB in size through email without requiring additional programs. The solution includes features to prevent human errors through notifications when processing sensitive information and the ability to track and block sent emails after delivery. Users can request file uploads through upload requests and upload portals to ensure they receive the correct files. The platform integrates with existing email clients including Outlook (browser-based), Gmail, and mobile devices. It supports linking secure emails to CRM and DMS systems used within organizations. Smartlockr is designed to comply with GDPR requirements and supports interoperable communication with other secure email systems. The solution aims to reduce data leakage risks while maintaining user-friendly workflows that do not disrupt existing work processes. The platform is marketed specifically for municipal and government use cases, with customers including various Dutch municipalities. Implementation does not require changes to existing email workflows, allowing users to continue working within their familiar email environments.