Ask HN: What software do you use for business 1:1 chat (NOT group/channel chat)?
Then over the last few years, a slew of new chat based apps popped up in the enterprise that were primarily focused on group/channel chat (e.g. Slack, Zulip, etc.) as opposed to the 1:1 messaging model.
What would be good chat software today that focuses on 1:1 messages (not groups/channels)?
[XMPP worked great for this but that doesn't seem en vogue any more. And I find the focus that many of these "modern" chat app have on group/channel distracting]