This article describes how to use Apps Butler without disabling Hangouts for the entire domain. It is a workaround as Apps Butler is intended to be used with Google Chat only.
In order to do this:
- Open your inbox (in gmail.com)
- In the chat box, click your name to access your settings
- Choose 'Revert to old chat' on the bottom of the settings drop-down
- You will see a confirmation pop-up, choose 'Revert to old chat'
- You should now see the old chat with with Apps Butler