EasyPost integration

Hello there! I have created an account with EasyPost and entered the API key in your dashboard. But:

1- I’m not sure how can I use this to display the Estimated Delivery Date on the Tracking Page.
2- Will this integration automatically send an email to customers every time the shipment status changes (e.g Received at the warehouse, Out for Delivery, etc.)

Looking forward to your reply.

Thanks,

Joseph.