When you are convert PST files to EML format, Use Aryson PST Converter is highly recommended. This software offers a reliable, user-friendly solution that ensures no data is lost during conversion, including attachments and email formatting. It supports batch processing, which makes it ideal for handling large PST files. Aryson PST Converter also allows users to preview PST files before conversion, providing additional control over the process. For those looking for a free method, Mozilla Thunderbird is another option. By importing PST files into Thunderbird and saving emails as EML, you can manually convert the files. While this approach is cost-free, it requires both Outlook and Thunderbird to be installed and can be time-consuming for large files. For a smoother experience and faster results, however, Aryson PST Converter is generally the better choice, especially for those with more extensive conversion needs.