Slack is hard to leave. I work on a 100% remote team- it is our office. Few of us have met in person, there just isn't budget for travel. Therefore all of our emotional connections with each, all of our work-life are built atop the Slack (and Zoom) UI. That's a hard thing to replatform. Slack also almost never falls down. Its remarkably fast, the search is fast and faceted, and they manage cross-device notification s…
There’s also emacs-slack, which is exactly what it says on the tin. It means that I control my Slack experience.