Convert Email to HTML and Export

Convert the email to HTML first, then read the content, export an HTML directory or write the PDF as needed. Here is an example:

using (CEmailResult result = CEmailConverter.ConvertToHtml("/mail.eml"))
{
    if (!result.IsSuccess())
        return;

    // Get the HTML string
    string html = result.GetHtml();

    // Export an offline HTML directory: index.html, resources/ (body resources) and attachments/ (attachments)
    result.ExportHtml("/mail_html/");

    // Write the PDF from the same result; this can be called repeatedly
    result.WritePdf("/mail.pdf");
}

The HTML references the files under resources/ and attachments/ by relative paths, so the HTML string alone is not a complete offline copy. Use ExportHtml to export the complete directory, or set CEmailFlags.EMAIL_INLINE_RESOURCES to embed images and other resources as data URIs where possible.