Is it possible to log in to the site with Netscape or Internet Explorer 4,5,6,7,8 ?
I’m afraid not. I haven’t tested all of these, but with IE, I believe you’ll need at least IE10 to even see more than a blank page.
There is a bit of a workaround if you need to view a thread on these browsers, you can append /print to any MG links and that will work in some older versions as the print page is rendered more simply. For instance, this thread would be,
https://wink.messengergeek.com/t/messengergeek-with-old-version-browser/17577/print. Not the best, but better than nothing if you need it and will work on any forum that uses Discourse.