cool feature here: Get all caught up Meet All Unreads — a new way to catch up on a myriad of Slack conversations in one, simple sweep. With all your unread messages in one spot, you can quickly scan what’s new, review what you need to, and clear the rest. With just a scroll and a click, you’re all caught up! Want to try it out? Head to Preferences > Advanced > Channel List > Turn on All Unreads.