I need to wire my existing website and mobile app into WhatsApp so I can fire off predefined messages to customers from both platforms. I’ll be maintaining the message templates myself—adding, editing, and localizing them through whatever dashboard or code snippet you supply—so please allow easy template management that complies with WhatsApp Business API rules. Here’s what I’m expecting: • Clean integration with the official WhatsApp Business or Cloud API (no third-party work-arounds). • Trigger endpoints or webhooks that let my server decide when to send a given template. • A simple UI, config file, or CMS field set where I can create and update those templates without deploying new code. • Message-status callbacks so I can log delivery and read receipts inside my own analytics tables. • End-to-end testing on both the website and the mobile build (iOS & Android) to confirm everything works before we go live. If you’ve handled WhatsApp template approval flows before and can turn this around quickly, let’s talk details and timelines.