The goal is to design a workflow with a main target and the target to exclude. This target corresponds to recipient from delivery whose the typology is Trigger. In my example, it will be defaultTypology
We need to parameter our query (nom interne de diffusions égal...).
Open it and clic on the button (red square)
This table content all recipients having received previously a message
Clic on delivery (red square)
In the delivery schema, open typology and select your criteria (@label...@name)