RASA Chatbot Integration in WhatsApp without involving Third Party

Hello there, I’ve successfully integrated RASA Chatbot in Facebook Messenger through Meta for Developers platforms. Previously, I was able to integrate RASA Chatbot in WhatsApp through Twilio. Now, I want to opt-out the third party between in and trying to integrate RASA Chatbot in WhatsApp through Meta for Developers Platform by adding WhatsApp Product in my App. By following all the specified Procedures, I was able to send a message to my number only after verifying it. In Facebook Messenger case, I was able to establish the communication between user and Chatbot just by providing the Webhook URL. But in WhatsApp case, It is not working. Please provide me assistance in following aspects:

  • How can I send and receive WhatsApp messages over Webhook URL just like in case of Facebook Messenger.
  • How can I send message to any WhatsApp Number without verifying it.
  • I don’t want to send custom messages to a WhatsApp number, rather wants to initiate communication between user and Chatbot(that will definitely initiate by user). I need serious suggestions on these issues.