I've been usign columns references in the text of my automations messages a while now. It looks like that. The text is in french but you can see the symbols used.
Bonjour {{Fournisseur}}
Voici la confirmation de commande pour le projet {{Projet}}.
La date de début est le {{Date de début}}
La date de fin est le {{Date de fin}} inclusivement
{{Chargé de projet}}
{{Adresse email chargé de projet}}
{{No de téléphone chargé de projet}}
I wonder if it's possible to do the same thing with sheet summary cells. I've tried {{#cell}} but it doesn't work.