Over the last year or two, I have discovered the solution that is the problems I see with PDFs.
I have been able to have portable and printable documents just like PDFs, but using HTML and CSS.
I have just sent a test page of an important document, and, it does not work like a normal attachment, and the JavaScript does not work either.
Ok, The page has src and link tags originally, but I replaced the src with the full text of the JS file. I am yet to do that with the CSS, but should I bother.
I use the JS to populate tables containing important business figures, as well as to create the page top canvas logo too.
I need JS to work in the attachment. What can I do to make sure that works?