Post a message into a Teams Channel using any HTTP client

Overview:  I need to post messages into Teams channels from my application, it is extremely easy to do and took me 15 minutes. 

Steps to Post a message from Postman into a specific Teams Channel:

1. Setup a channel to accept POST requests

Add a connector to the Channel

Find the "Incoming Webhook" connector

Create/Configure the new Webhook

Copy the webhook endpoint

2. Send a postman POST HTTP request to push the data into the Teams Channel

3. Verify the result in the teams Channel

The custom message is displayed in the channel.

Tip: Format the card/message using these instructions.