Was a plain POST /v3/contacts upsert (single opt-in — straight onto the
list, no confirmation required). Now calls doubleOptinConfirmation
instead, so a signup only requests subscription; Brevo sends its own
confirmation email and adds the contact to the real list only once they
click through. Needs BREVO_DOUBLE_OPTIN_TEMPLATE_ID set in Coolify
before this works — not yet configured, signups will fail closed with a
logged reason until it is.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Marco
df4bd700e6