sendWhatsAppTemplateMessage sends a template approved for the connected WhatsApp Business Account. Templates may initiate a conversation or message outside the 24-hour customer-service window.
automations/send-whatsapp-reminder.automation.ts
to, templateName, and languageCode. Optional components supports typed header and body parameters plus quick-reply and URL button parameters. Parameter values can be text, currency, date/time fallbacks, images, videos, or documents. callbackData and static account are optional.
Returns { messageId, recipientId, status? }. Meta can reject a request when the template, language, components, recipient opt-in, quality status, or account eligibility does not match.