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How to send a follow up message on WhatsApp

Updated this week

Summary

This guide explains how to configure the Send message after call action in Astra. This action allows your voice agent to automatically send a follow-up WhatsApp message after a call using predefined or templated content. It helps ensure consistent and timely communication with customers after every interaction.

Instructions

Follow these steps to set up and configure the post-call follow up message Wati action in Astra:

Set up the action

  • Log into your Astra account.

  • Go to Action Library.

  • Select Send message after call Wati action.

  • Open the Configuration step.

Configure action settings

1. Action intent page

  • What to do:

    • Enter a clear action name and intent.

    • Click Edit action intent to update it anytime.

  • How it works:

    • A well-defined intent ensures the agent triggers this action at the right moment, such as immediately after a call ends.

2. Wati account

  • What to do:

    • Select the Wati account you want to use.

  • How it works:

    • The follow-up message will be sent using this selected account.

Before proceeding, make sure your Wati and Astra accounts are connected.

3. Message body

  • What to do:

    • Enter the message content you want to send.

    • You can use fixed text or templated content based on your use case.

  • How it works:

    • When the action runs:

      • The configured message is sent as a WhatsApp session message.

      • The message is delivered to the current active chat after the call ends.

      • The content remains consistent and is not generated dynamically at runtime.

When to use this action

Use this action when you want to:

  • Send a follow-up message after a voice call

  • Share next steps or additional information

  • Maintain consistent communication with customers

  • Reduce manual effort for post-call messaging

This helps ensure customers receive timely and clear communication after every interaction.

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