Isntree mail!?

In general, I always use the email listed on the website of the brand. If you can't find an email in their contact page, try their IG page (most brands have their email listed under the contact button) or check the terms on their website, usually there's a emailadress there too. Some brands have a separate PR or Media departement, but if you send an email to the CS or the general info@ adress, most of them will respond with the emailadress of the responsible person or departement. And if there isn't any emailadress to be found on their website or IG, just send them a DM then.