SysInfo Yahoo Backup Tool is a reliable solution to back up and migrate Yahoo Mail emails securely. It allows users to export Yahoo mailbox data into PST, MBOX, EML, MSG, PDF, CSV, JSON, and other formats or migrate emails directly to Microsoft 365, Gmail, and IMAP accounts. The software supports batch mailbox backup, folder selection, duplicate email removal, date-based filtering, incremental migration, and attachment management. It preserves email structure and metadata while providing a convenient way to archive and manage Yahoo Mail data on Windows, Mac, and Linux systems.