In reference to this article:
https://www.cnil.fr/fr/la-prospection-commerciale-par-courrier-electronique
We note that there is no concern for making commercial proposals as follow :
"Generic business addresses of type (info@nomsociete.fr, contact@nomsociete.fr, commande@nomsociete.fr) are legal persons and are not subject to the principles of consent and the right to object."
Otherwise, the best way to contact a company remains the contact form...