where as I used to be able to just open and print, very frustrating as I want to use Edge but trying to find an answer to this has wasted many hours, do I have to go back to IE so I can open my mail?
Internet Explorer let you "open" things directly from the browser by downloading it and saving it as a temporary file. The file would eventually get deleted automatically.
Edge doesn't have this option, now you have to delete the file manually after you're done with it.
Personally I'd like to see them add back the original option since it's convenient to have the file deleted automatically if you don't need it. For now though, you'll have to delete the file yourself.