HTML email still handles that sort of thing poorly. I'd rather receive reports like that as PDF attachments. I can view those almost anywhere, and they're resizable.
They also have lots of tables, are easy to create, especially because of the stylesheets and support for html output in several different languages, and are easy to copy and paste from.
How would I make the pdfs? Please keep in mind that these are internal corporate emails, over several counries and firewalls, with a highly restrictive IT system.