WhatsApp Broadcast Automation Strategy

I want to systemise my marketing on WhatsApp so that broadcast messages go out automatically, reach the right segments, and stay compliant with WhatsApp Business policies. I already have content ideas; what I need is a clear, step-by-step strategy that shows me:

• which platforms or APIs (e.g., WhatsApp Business API, Twilio, WATI, Zapier) best fit my current tech stack
• how to structure and tag my contact list for effective segmentation before each broadcast
• the ideal sending cadence, opt-in flow, and message templates that maximise open and click-through rates without triggering spam flags
• a simple performance dashboard outline—what metrics to track, how often, and which tools to pull the data from

Acceptance criteria: the final plan must be delivered as a concise PDF + an editable flow-chart (Figma, Lucidchart, or similar) that walks me from opt-in to post-campaign analysis, with every automation trigger and message template clearly marked.

If you have direct experience setting up WhatsApp broadcast funnels, let’s talk.