In HipChat, you can be in a room but you won't get notifications if people mention "@here" while you're idle. With Slack, this isn't possible; you would get email notifications for all of the rooms you're in every time "@channel" is mentioned. Furthermore, "@everyone" can only be used in the primary chat room, not others.
In HipChat, you can be in a room but you won't get notifications if people mention "@here" while you're idle. With Slack, this isn't possible; you would get email notifications for all of the rooms you're in every time "@channel" is mentioned. Furthermore, "@everyone" can only be used in the primary chat room, not others.