Slack is a company seemingly on a roll. The service, for those who haven’t used it, is heralded by many as the way to fix email in all its broken, reply-to-all glory. Listening to the shouts of the Silicon Valley cognoscenti, one would be excused from suspecting that everyone on earth uses Slack but, while Slack has seen some stellar growth, it’s not quite hit the mainstream to that extent.
Slack’s raison d’etre is to remove much of the need for email. Instead of constant backwards and forwards and cc’s that are hardly required, Slack users set up teams, channels and topics and have a constant stream of the most relevant communications for them. That can be by way of direct messages between two parties, conversations between teams or automatic feeds from other sources (RSS notifications, feeds from alternative social networks, etc.).