Both standalone signup forms (Newsletter.tsx on Home/newsletter page,
NewsletterModal.tsx from the Navbar CTA) were previously non-functional
— static markup with no onSubmit/state at all, nothing was ever
captured. They're now real client forms posting to the new
/api/newsletter/subscribe route, which upserts the contact into
Brevo's Contacts API (list id from BREVO_LIST_ID). Checkout's existing
newsletterOptIn checkbox gets the same sync, fire-and-forget alongside
the order-confirmation email — a failed marketing sync must never
fail checkout.
lib/brevo.ts is the only thing that talks to Brevo; this app still
never sends marketing mail itself. Whatever automation Brevo has
configured on the list (Welcome Flow etc.) runs entirely on their
side — Brevo's Automation workflows aren't manageable via their
public API at all, so that part can't be wired up from here.
Needs BREVO_API_KEY and BREVO_LIST_ID set in the frontend's Coolify
environment — not yet added there.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Marco