Telegram

You will need to create a bot in Telegram via the Godfather bot to obtain a Telegram bot token. If you already have one, you can use that as well. Once you do that you will need to get the chat_id for the channel you want to send the notifications to. There is documentation on how to do this online but the one I used for testing was a gist on Github

After you have the token and the chat_id you can add them to the platform and receive notifications