Converting the attached file to HTML with GroupDocs.Viewer or to PDF with GroupDocs.Conversion takes about half an hour to complete. Version 21.2 was used for testing (both).
The resulting HTML/PDF file looks fine, it’s just the long conversion time that’s problematic for such a small file.
It’s probably related to the embedded images which cannot be loaded.
eml conversion time.zip (24.3 KB)