You should be able to drag the icon for the document from the email onto your Desktop and then do as everyone above is suggesting. Alternatively you could download the document like you would any other attachment.
On a Mac since 1984. Currently: 24" M1 iMac, M2 Pro Mac mini with 27" BenQ monitor, M2 Macbook Air, MacOS 14.x; iPhones, iPods (yes, still) and iPads.
