App icon notifications

Slack will notify you of unread activity by displaying a dot on the Slack icon in your desktop notifications area (system tray) or dock. The preferences for this feature differ depending on which app you use.

Mac

Windows

Unread activity

The dock icon for the Mac desktop app will display a red circle when you have unread activity in Slack.

A red circle with a white dot means there is some unread activity in one of your Slack teams.
A red circle with a number indicates direct messages, mentions, or messages containing one of your highlight words.


Turn off Mac dock icon notifications

If you’d prefer not to see the dot when you have unread activity, you can turn it off in your Preferences.

  1. Click your team name to open the Team Menu.
  2. Select Preferences.
  3. Click the Notifications tab.
  4. Under Dock App Icon, uncheck Show (•) symbol on icon to indicate unread activity.

You can adjust this team by team, so you can turn it off for one team while tracking activity for another.

Notification area

When Slack is running, you’ll find a Slack icon in your notifications area. You'll see a blue dot when you have unread activity on one of your Slack teams, and a red dot when you've received a mention, announcement, or direct message.

While there’s no option to turn off this dot, you can choose not to leave Slack running when the window is closed:

  1. Click your team name to open the Team Menu.
  2. Select Preferences.
  3. Click to the Windows App tab.
  4. Uncheck the Leave app running in notification area when the window is closed option. 


Taskbar

From Preferences, you can also choose how you want the Slack icon to flash in the taskbar when a notification is received: Never, When left idle, or Always.

A red circle with a number indicates direct messages, mentions, or messages containing one of your highlight words.

Note: The icon will stay in the taskbar if your preference is set to Always flash when a notification is received.