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Question

Can we send Human in the Loop approval messages to a Slack thread instead of a new channel?

  • July 15, 2026
  • 2 replies
  • 20 views

Hi , I am exploring on the Human in the loop. Here Can we send the request approval message to slack thread instead of posting it as a new channel message.

2 replies

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  • Zapier Solution Partner
  • July 16, 2026

Hi ​@Eswari 

You can try this approach:

The Two-Zap Setup

Zap 1:

  1. In your main Zap, add a Human in the Loop - Request Approval or Collect Data action.

  2. In the Notification section, set "Send to" to "Trigger a Zap" instead of "Slack" or "Email" .

Zap 2:

  1. Create a new, separate Zap.

  2. For its Trigger, select Human in the Loop and the New Approval Requested event .

  3. For its Action, select Slack - Send Channel Message .

  4. In the Slack action's "Thread" field, map the ts (timestamp) of the parent message you want to reply to .

  5. In the message content, include the URL of the first Zap's run so the reviewer can click it to take action .

Documentation:

Hope this helps you get it sorted!


SamB
Community Manager
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  • Community Manager
  • July 21, 2026

Hey ​@Eswari 👋 How did it go with Fahad's suggestion here? Did that two-Zap approach work for sending the approval to a Slack thread, or are you still working through it?

Happy to help if you get stuck at all 🙂