3 ms·Hard to tell; Slack doesn't let you know who's online, what they've read etc.by dave2000 11y agoHard to tell; Slack doesn't let you know who's online, what they've read etc.srcreigh 11y agoSlack lets you know who's online.dave2000 11y agoYou're right - I had to dig around to find it (on the Android app). It's nowhere near as clear as it is in Facebook Messenger. (And of course there's no `read to here`).