What Slack Do Not Disturb Actually Does
When you enable Do Not Disturb, Slack makes exactly three changes:
- Notification banners are suppressed: no pop-up toast appears when a message arrives.
- Notification sounds are muted: no chime, ping, or buzz plays.
- A snooze icon appears next to your name: a small z on your presence dot (some newer builds show a moon instead). Your teammates see it next to your name and avatar (see what the z on a green Slack dot means for the full breakdown).
That is the full scope of DND. Everything else continues as normal: messages arrive, files are shared, @mentions land in your Mentions tab. You are reachable and visible. You just won't be interrupted.
What Slack DND Does NOT Do
- It does not change your presence. Your green dot (Active) or hollow dot (Away) is determined by your activity level in Slack, not by DND. You can be Active with DND on. You can be Away with DND off.
- It does not block messages. Anyone can send you a message. They just won't know if you saw it immediately.
- It does not prevent you going Away. The inactivity timer runs independently. Step away from Slack for 10 minutes and you go Away regardless of DND state.
- It does not hide your status from your team. DND isn't an invisible mode. The closest Slack has is setting yourself to Away manually, which is a separate setting.
DND vs Away: What Each Actually Controls
| Setting | What teammates see | Silences notifications | Hides your presence | Stops Away timer |
|---|---|---|---|---|
| Do Not Disturb | Your normal dot + snooze icon | Yes | No | No |
| Set yourself as Away | Hollow dot, looks inactive | No | Partial | No |
| Active (normal) | Green dot, online | No | No | No |
| Stay Green On Slack | Green dot, always Active | No | No | Yes |
How to Enable Slack Do Not Disturb
Three ways, in order of speed:
Via your profile picture: Click your profile picture in the sidebar → hover over Notifications (or Pause notifications) → choose a time frame, or Custom to set your own end time. On mobile, tap your profile picture → Pause notifications.
Slash command: Type a /dnd command in any message box. It's the fastest method once you know the syntax:
/dnd for 15 minsor/dnd 1 hour: pause for a set length of time/dnd until 5pmor/dnd until 17:00: pause until a specific time/dnd until tonightor/dnd until tomorrow morning: pause until a time of day/dnd off: resume notifications straight away
Notification schedule (automatic): Click your profile picture → Preferences, then under Working hours use the Allow notifications drop-down. Outside the hours you set, Slack pauses notifications automatically.
Scheduling DND: Automatic Quiet Hours
The most powerful DND setting is the notification schedule, which works like automatic quiet hours across every day of the week:
- Click your profile picture and open Preferences (or press Cmd/Ctrl + ,).
- Find Working hours and open the Allow notifications drop-down.
- Choose Every day, Weekdays or Custom, then set a start and end time. Custom lets you give each day different hours, or leave weekends off entirely.
- Outside those hours, Slack pauses notifications automatically, so you never have to remember to switch DND on at 6pm.
The schedule applies to one workspace at a time, so if you're in several Slack workspaces with different working hours, set it in each.
Workspace default hours (set by admins)
Workspace owners and admins can set a default Do Not Disturb schedule for everyone, from Admin › Workspace settings › Settings, then Expand next to Do Not Disturb. That's why some people see the snooze icon appear every evening without ever setting it. Your own notification schedule overrides the workspace default, so if the company hours don't fit yours, set your own.
Who Can Break Through Slack DND
Slack does not have a priority contacts list. Instead, any sender can choose to override your DND:
When someone messages you while you have DND on, Slack tells them your notifications are paused and offers to notify you anyway. If they choose that, your device delivers the notification immediately, sound and banner included. Slack limits this override to an urgent message once per day, so it can't become a back door for every ping.
This means DND is soft protection, not a hard block. If you need uninterrupted focus, closing Slack or stepping away from your devices entirely is the only approach that fully stops incoming interruptions (but comes with the trade-off of appearing inactive).
The One Thing DND Can't Solve
Do Not Disturb is a notification tool. It has no interaction with Slack's presence system. If you enable DND and then switch to another application for 10 minutes, Slack's inactivity timer still runs, and you go Away.
This means the two most common "I need to focus without distractions" use cases require separate tools:
- Silence interruptions → DND handles this.
- Stay green while working elsewhere → DND does nothing here. A cloud-based presence tool is what keeps your status Active while you work in other apps.
You can run both at the same time: DND on for quiet, Stay Green On Slack active to keep your dot green. Your team sees you as Active but knows you're in focus mode, exactly the right signal for deep work.