How is Twist (the product they announce in this post) much different from email? Besides not using open protocols? Don't get me wrong, it looks like a beautiful

How is Twist (the product they announce in this post) much different from email? Besides not using open protocols? Don't get me wrong, it looks like a beautifully designed email client. There are some interesting features here but it seems like you could do this all using existing email features. Am I wrong? The choice of asynchronhous vs. synchronous is a false dichotomy. Development teams I have been on use a combination of both since forever. Before Slack/Hipchat there was XMPP/Jabber before that was IRC. It must be business people binging on the glory of synchronous communication then having a hangover. In my experience this has never been an issue.