WhatsApp API Bulk Marketing Setup

I need to get my business fully onboarded to the official WhatsApp Business API and ready to run large-scale marketing campaigns. The immediate goal is to complete the sign-up process, secure approval, and have a working endpoint that can broadcast compliant bulk messages to my opted-in customer list.

Once the account is live, I want a straightforward workflow—either through code (Node, Python, PHP) or a third-party gateway you recommend—that lets me upload a CSV of contacts and push a single marketing blast. Template registration, opt-out handling, and delivery reporting must be covered so the campaign stays within Meta’s policies.

When you reply, highlight previous experience doing this exact type of work: onboarding businesses to the WhatsApp API, configuring bulk sending, and overcoming Meta/Facebook Business Manager hurdles. Links or brief summaries of similar projects are enough; no need for a long proposal.

Deliverables should include:
• Verified WhatsApp Business API account ready for use
• Bulk send script or dashboard with clear setup instructions
• Short handover guide covering template approval, rate limits, and message analytics

I will provide access to the Facebook Business Manager and the domain DNS when we begin.