MacSonik Yahoo Backup Tool is a safe and dependable utility for backing up Yahoo mailboxes to several file types on macOS.Users can use this tool to migrate their Yahoo mailbox data and instantly upload it to Office 365 and other email clients. It allows users to create backup copies of their Yahoo data, ensuring data security, and offering features like Backup and Saving Yahoo Emails as PDFs. With the Yahoo Backup Tool, users can back up their mail to PST, MBOX, CSV, etc, and save them locally on the device.