Tracy Gustilo and I have a sort-of evolving relationship on Substack.
You could do a shared Obsidian vault on Dropbox, to write and edit your posts, then once you've agreed they are ready, post articles to Substack. (Maybe even use the current OBC vault.)
You could do a shared Obsidian vault on Dropbox, to write and edit your posts, then once you've agreed they are ready, post articles to Substack. (Maybe even use the current OBC vault.)