If you have the TextMeBot PRO features enabled, you can send messages to Channels/Newsletters using the API.
Channels are called “newsletter” within WhatsApp backend environment.
In order to send a message to a channel, you need to know the channel ID (newsletter address).
Warning: Remember that you must be the Owner or have permissions to send messages to the channel before using the API to send the message.
How to bbtain the Channel ID using Web Browser
One easy way to obtain the Channel ID (newsltter address) is by using the Web Browser.
1) Open the Channel using a WhatsApp web session
2) Open the Chrome/Edge/Firefox Developer Tools (Ex. Ctrl-Shift-I in Chrome/Edge)
3) Select a Chat element of the conversation to Inspect it
4) Seach for @newsletter in the code (Elements Tab)
5) Find the newsletter address
6) The channel ID is the number@newsletter string. For example, in the screenshot above, the Channel ID is 120363317079207099@newsletter
How to obtain the Channel ID using the API
This is WIP