Hi @Alixrodi, thanks for visiting the Community today!

You can use custom fonts in Klaviyo signup forms or email templates to help match your site’s branding. You can use a Google Font, Adobe Font, or a Custom Font hosted on your site. 

You can read about how to add them to signup forms here.

You can also find information on how to add a custom font to an email here.

It’s important to note that although Klaviyo supports custom fonts in email templates, not all email inboxes will load custom fonts, and this is a limitation of the inbox provider. This means that some of your recipients will see your email in a standard web font, not in your custom font. 

I hope this helps, happy sending!