This is a full-stack PHP web application for parsing, storing, and viewing DMARC aggregate (RUA) reports. It provides a web interface for administrators to manage domains, users, and reports, and includes CLI utilities for automated report fetching, cleanup, and summary email generation. The architecture follows a layered design with database abstraction via mapper interfaces, multiple report source implementations (IMAP mailboxes, local directories, remote filesystems, file uploads), and a plugin system. The front-end uses vanilla JavaScript with custom reusable UI components (tables, dialogs, multiselect) and a hash-less router. The codebase is well-structured, includes unit tests, and demonstrates strong software engineering patterns such as the repository pattern, factory methods, and interface-segregated database mappers. However, it relies on PHP extensions like imap (deprecated in PHP 8.4), uses MySQL-specific SQL, and has some XSS concerns due to innerHTML usage. It is not a data research repository; it is a production-ready application for managing DMARC reporting.