Im sending whatsapp message from whatsapp business api. API collections i got from facebook-whatsapp docs. Link

My End goal to check blue tick, does recipient has seen the message.

So I am working on creating a native app for Whatsapp business users so that they can use this app to effectively chat with their contacts on Whatsapp. This mean that if another user messages a business user on Whatsapp then the business user is able to view the same message on a different app and respond to them from that app only.

Does Whatsapp API or any 3rd party like Twilio allow that to happen?

I tried using Twilio but it doesn't really work the way as mentioned above

As per Whatsapp policies and Twilio docs, the business initiated conversations require the pre-approved message templates. The Whatsapp API provides a programmatic way to maintain and approve such templates.

Is there an appropriate API endpoint on the Twilio side for the programmatic Whatsapp's templates management? I haven't found anything except the manual template submission using the Twilio console.

I have setup a two way communication between business account and customer using whatsapp business apis. I am having trouble understanding media providers that there documentation talks about for sending text message to customer with image/media.

Heres the link to it: https://developers.facebook.com/docs/whatsapp/api/settings/media-providers/

Who are these providers? are they some specified organisation?

I am currently storing the media files in AWS S3 using some pre-signed url method. Can I use media stored in S3 in whatsapp media message?.

An example would be great help.

What is the best and safest authentication strategy to support Gupshup(WhatsApp) and my own Business API integration? We independently support JWT/Oauth based authentication on our API, but in case of WhatsApp Integration, we will just have a phone number and not a user ID & password.