Opt-in automation is triggered when the user types "Start" or "Subscribe" in your Messenger channel.
Opt-out automation is triggered when the user types "Stop" or "Unsubscribe" in your Messenger channel.
If you want to change the flow triggered by these keywords, go to corresponding channel Settings. Click “Edit” to open the flow.
Please note, that system keywords are by default and aren't editable, but you can add your own keywords as triggers if you need. Once you finish editing the flow, don’t forget click to “Publish” to save your changes.
You can change the flows triggered by system Keywords for Instagram, Messenger and WhatsApp channels. As for the SMS channel, it’s possible to edit Opt-out automation only by sending request to support.