A simple and effective way to
import MBOX files into your Yahoo Mail account is by using the
SysInfo MBOX Exporter Tool. This tool allows you to transfer all your MBOX emails, along with attachments, from clients like Apple Mail or Thunderbird straight into Yahoo Mail. It maintains the original folder layout, supports bulk file transfers, and ensures no data is lost during the process. Whether you're moving a few files or many, the software handles it smoothly.