Converting EML to PDF can affect your attachments and metadata depending on the method you use. When you convert EML to PDF, the formatting and email body remain same. However, attachments are not always included automatically; they can be saved separately and not. Similar to this basic metadata like sender, topic and date can often be seen in the PDF but more complex properties like headers might not be fully preserved. When you use free tools, these limits stand out more especially when converting many emails. That is why mostly users prefer secure tools like WholeClear EML to PDF Converter, which can handle attachments and email data better while converting.