This guide explains how to set up a follow-up message on WhatsApp (or other channels) while staying compliant with the 24-hour conversation window rules. Key sequence: Assign to AI agnet → Wait until → Send Message in ConversationDocumentation Index
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- Assign To AI agent → Starts or re-opens the conversation window when user replies to the AI agent .
- Wait-until → Pauses the journey for a defined duration after the last message of the user.
- Send Message in Conversation → Sends the follow-up inside the active 24-hour window.
Business Use Case
Suppose you want to greet a new lead with a welcome template and then follow up 10 minutes later by asking if they’d like a demo. This sequence ensures your follow-up lands at the right time and in the same conversation thread.Step 1: Create a Journey
- Go to Journeys in the left menu.
- Click Create Journey.
- Enter a name (e.g., Follow-up Journey) and choose Blank Journey.
Step 2: Add a Trigger
- Add a Trigger (e.g., Conversation Created, Contact Added to List, or Inbound Webhook).
- Select the channel (WhatsApp, Instagram, Messenger) and configure any conditions as needed.
Step 3: Add the Assign to AI agent Action
- Click the + button → **Action → Assign to AI agent → Select the AI agent **.
Step 4: Add a Wait-until Step
- After the Assign to AI Agent step, click + → Action → Wait-until.
- Set a wait duration (e.g., 10 minutes) or a specific time that fits your use case. Select event as Last message is older than duration
Example: Wait 10 minutes after users last message to send the Follow-up.
Step 5: Add the Send Message in Conversation Action
- After the Wait step, click + → Action → Send Message in Conversation.
-
Configure the action:
- Conversation ID → Select the active conversation ID (e.g.,
{{conversation_id}}or{{inbound_webhook.inbound_webhook.conversation_id}}). - Channel → WhatsApp (make sure the conversation window is still open).
- Message Type → Text, Image, Video, Document, etc.
- Message Body → Enter the follow-up message, or enable AI Generated Follow-up Message for a context-aware reply.
- Conversation ID → Select the active conversation ID (e.g.,
⚡ Why this step?
Send Message in Conversationdelivers the follow-up inside the existing 24-hour chat, keeping context intact and ensuring compliance.
Step 6: Publish and Test
- Click Save → Publish.
- Test the flow:
- Trigger the journey (via webhook, conversation, or list).
- Confirm the initial
assign to AI agentis Triggered. - Wait-until for the set delay after the users message.
- Verify the
Send Message in Conversationarrives in the same chat. - Check the Conversations tab to confirm both messages are visible in one active conversation.
Tips & Notes
- For inbound webhooks, use:
- Phone →
{{inbound_webhook.inbound_webhook.phone_number}} - Conversation ID →
{{inbound_webhook.inbound_webhook.conversation_id}}
- Phone →
✅ With this setup, your chatbot can automatically send follow-ups that feel natural, land at the right time, and fully comply with platform policies.