To quickly import MBOX files into Yahoo Mail, eSoftTools MBOX Converter software offers a simple and reliable solution. First, download and install the software on your system. Launch the tool and select the MBOX file you want to import. You can preview all the emails before conversion. Now, choose a Yahoo-supported format like EML and start the conversion process. After conversion, sign in to your Yahoo Mail account and upload the converted emails. This method helps you quickly import MBOX data into Yahoo Mail without any data loss, efficiently preserving email structure, attachments, and metadata.