Notifications: Shows a list of all spaces where you have notifications selected and something new happened.
Unread: Shows all unread messages.
Favorites: Shows a list of all spaces you marked as favorites.
Hidden: Shows all of your hidden spaces. Hidden spaces no longer show in your spaces list.
@mentions to me: Shows a list of all messages you have personally been @mentioned in.
@mentions to all: Shows a list of all messages where everyone was @mentioned in spaces you are a member of.
Threads: Shows a list of threads within chats and spaces.
Flags: Shows a list of all messages you’ve flagged.
Drafts: Shows a list of your drafted messages.