I'm running macOS High Sierra. My wife is on a computer that only supports OS X El Capitan. She writes a document on Pages. How does she collaborate with me, or I with her, so that neither of us are bumped to iCloud.com.
I would like it so that she could write a document, and share it with me in such a way that we both see how I tweak it, or that I write a document and share it with her so that we both can see and edit it. But without being bumped into iCloud.
I'm yet to figure out how to do it. I've tried sharing via iMessage, or sharing via email.. what am I missing?