If you want to convert Yahoo emails to CSV, start by installing the SysInfo Yahoo Email Backup Tool on your computer. Once installed, open the tool and sign in to your Yahoo account. You’ll be able to see all your email folders. Select the ones you want to convert and set CSV as the output format. You can also decide what email details you want to save, such as the "From," "To," and "Subject." Click Start Backup, and the software will quickly convert your emails to CSV, which you can then save to your computer.
Read more: https://www.sysinfotools.com/yahoo-backup.php