I'm gonna focus on nostr mail instead of slack at first (async comms > sync imo)

That's another reason why we want to rebuild Slack. Everyone hates Slack. Me as well. It's design in such a horrible way. We have some cool ideas to make it way better, so people feel it helps them being productive opposed to being constantly distracted how Slack does it.

I'm working on flotilla.social, which is a slack/discord alternative. It should "just work" with your business suite stuff, and it already supports white labeling. I'm very interested in making a chat app that doesn't suck and isn't unhealthy for the people using it. HMU if you want to talk/contribute