Announcements, reactions, events with RSVPs, and birthdays — without burying them in chat.
Publish a news story with text, images, or video so the whole team can see it.
Use reactions and comments so announcements get feedback without starting a new channel thread.
Add an event with a time and place so it shows on the shared schedule.
Respond going / maybe / not going so organisers can plan.
Birthdays from profiles surface automatically so the team can celebrate.
Use News for announcements that should stay findable; use chat for discussion.