Converting msg to pdf with defaut PdfConvertOptions settings renders wrong page ratio (very high page), but setting PageSize to A4 renders a blank Pdf page (the file is not empty because the size is not 0ko). We are using dotnet 6 and GroupDocs.Conversion 24.3.0. Here is the code snippet:
ConverterSettings converterSettings = new()
{
    Logger = new GroupDocsLogger(_logger)
};
_formatFichierCible = request.FormatCible;
using Stream sourceStream = new MemoryStream(request.FichierSource.Contenu);
using MemoryStream outputStream = new MemoryStream();
using var converter = new Converter(
    () => sourceStream,
    (sourceType) => new EmailLoadOptions
    {
        ConvertOwner = true,
        ConvertOwned = false,
        Depth = 0
    },
    () => converterSettings);
int index = 0;
converter.Convert(
    () =>
    {
        index++;
        return (index == 1) ? outputStream : new MemoryStream();
    },
    (sourceFileName, targetFileType, convertedFileStream) =>
    {
        _logger.LogDebug($"Le document {sourceFileName} a été converti dans le format {targetFileType}");
    },
    // Provider des options de conversion
    (sourceDocumentName, sourceDocumentType) => new PdfConvertOptions()
    {
        Format = PdfFileType.Pdf,
        PageSize = PageSize.A4
    });
msg.zip (443,1 Ko)