- Add mailbox persistence mapper for domain object mapping.
- Create Sequelize repository for mailbox data access.
- Define common mailbox schemas and types for validation.
- Implement mailbox API for frontend communication.
- Develop mailbox form component for creating and editing mailboxes.
- Add internationalization support for mailbox labels and messages.
- Create mailbox use form for managing mailbox usage periods.
- Build mailboxes page to display and manage mailboxes and their usage.