To convert MBOX files to PNG using the WebbyAcad MBOX Converter Tool, follow these steps. First, download and install the WebbyAcad MBOX Converter on your Windows system. Open the tool and click on "Add File" to select your MBOX files. After importing the files, choose PNG as the output format from the available options. Customize any additional settings if needed, then initiate the conversion process. Once completed, you can download the PNG files, which will maintain the original email formatting and structure. This tool ensures a user-friendly experience while providing reliable and efficient conversion capabilities for your email data.