I just set myself as "away" when I'm on vacation. @channel won't send you a notification when you're away, it'll by default only notify you when somebody direct

I just set myself as "away" when I'm on vacation. @channel won't send you a notification when you're away, it'll by default only notify you when somebody directly messages or tags you. If you're focusing on something you can put slack in "Do Not Disturb" mode for a desired amount of time.