Download, install and launch the software on your Windows system.
Select Yahoo mail option and enter Yahoo account username and password. Hit the Authenticate button.
Once Yahoo account is authenticated, choose a folder of Yahoo account whose backup you want to take.
Choose a file format from the available options – PST, EML, EMLX, MSG, HTML, MHTML, and MBOX.
Click the Browse button and mention a location to save the backup files.
Click Generate Now button to commence the backup task.