Use this trigger to start a flow after receiving an uncaught message (a message not handled by any of your other flows or triggers). We refer to this as the "catch-all" trigger, as it can be used to route uncaught messages to a specified flow.
To create a catch-all trigger:
Navigate to the "triggers" tab and click the "Create Trigger" box.
Click the "Start a flow after receiving a message not handled elsewhere" option.
Choose the flow you want to start.
Click the "Create Trigger" box.
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