How can I add my company registration number in the footer without it appearing in email templates?

hi all - this has probably asked before.

I want to include my company reg number, as part of the copyright section in the footer, which i can achieve by editing my company details in the Shopify general admin. Which is fine, however i don’t want my full company name and reg number to be used in email marketing templates, which is what’s happening now via Klaviyo. It looks slightly odd in the context of my email templates, e.g. hello welcome to company name company reg number etc…

Using: Warehouse theme

Any ideas how i can add my reg number…?