Ah... that makes sense. I hadn't heard of Hey before but it appears Hey World is a pretty newly added feature to a platform primarily built for & around email -

Ah... that makes sense. I hadn't heard of Hey before but it appears Hey World is a pretty newly added feature to a platform primarily built for & around email - attachments do make some deal of sense in that context, though I'd imagine I might still like to browse image attachments in my email client from time to time rather than stash them in downloads. Might just be teething issues for a new product though.