Private Slack channels are part of what's known as "dark social" channels, which have specific access restrictions. To send messages to a private channel like #marketing-ops, you'll need to: 1. Make sure you have the proper Slack OAuth permissions and admin access for the channel
2. When using the "Send Message to Channel" action:
• Enter the channel name without the # symbol
• Fill in the required fields:
• Slack Channel (required)
• Bot Name (optional)
• Emoji (optional)
• Summary text (optional)
• Form Information (optional)If you still can't access the private channel after following these steps, you may need to verify your Slack workspace permissions with your workspace administrator.
Sources:Slack integration overview | Documentation | Clay UniversitySend Message to Channel with SlackWhat is Dark Social? | Clay