Create an announcement-only channel

By limiting who can post, announcement-only channels are a great way to broadcast information to everyone in Slack. 

  • Free, Standard, and Plus plans 
    Only the #general channel can set as an announcement-only channel.
  • Enterprise Grid plan 
    Any shared channel within the org can be an announcement-only channel. In default shared channels, members can use threads to reply to posts.

This type of channel becomes read-only to anyone without permission to post. Instead of the message field, members will see a message like this: Screen_Shot_2018-06-07_at_10.56.04_AM.png

Set up an announcement-only channel

Free, Standard, and Plus plans

Enterprise Grid plan

  1. From your desktop, click your workspace name in the top left.
  2. Select Administration, then Workspace settings from the menu.
  3. Click the Permissions tab.
  4. Next to Messaging, click Expand.
  5. Under People who can post to #general, make your selection.
  6. Click Save.

Workspace level

Org Owners and Admins can create and decide who can post in announcement-only channels for any workspace in their org. By granting permission to create shared channels, they can also allow members to create announcement-only channels as well. For those with permission, here's how to set one up:

  1. Open a shared channel.
  2. Click the   gear icon to open the Channel Settings menu.
  3. Select Additional options.
  4. Under Manage posting permissions, choose who can post in the shared channel. 
  5. For a default shared channel, you can check the box next to Allow members to start message threads. This allows people to add threaded replies to messages posted in this channel.
  6. Click Review, then Set posting permissions.


Org Owners and Admins must first create a shared channel on the org. Next, set the posting permissions to an announcement-only channel. 

  1. From your desktop, click your workspace name in the top left.
  2. Click Administration, then Organization settings.
  3. Click  Settings on the Admin Dashboard.
  4. Click Shared Channel Settings
  5. Under Default Channels, click Add a channel, choose a new default channel, then click Next. Or, hover over an existing channel, click the  three dots icon, and click Edit channel settings.
  6. Choose a membership type and who can post in the channel. For a default shared channel, you can also allow members to start message threads, if you'd like.
  7. Click Next, then click Save.

Note: It's not currently possible to set posting permissions on non-shared channels. 

Who can use this feature?
  • Workspace Owners or Org Owners/Admins can access this feature.
  • Available on all plans.

Related Articles

Recently Viewed Articles