I've often thought about using good old NNTP as a replacement for Slack. It does everything I want from Slack in terms of structured conversation and preservati

I've often thought about using good old NNTP as a replacement for Slack. It does everything I want from Slack in terms of structured conversation and preservation of information. At the same time it doesn't have the same real-timey feeling (that the OP refers to as urgency).