Parameters for custom email header?

Hi @rdav , I might have an idea about this: have you tried to check this article: https://help.brevo.com/hc/en-us/articles/360000591660-Show-or-hide-blocks-based-on-contact-attributes

You’ll find info about how to personalize your emails based on:

  • contact attributes
  • transactional attributes
  • repeatable blocks

Tell me if this helps!