WhatsApp CRM with Full APIs

I want a custom WhatsApp-centric CRM that lets me work from one place instead of juggling multiple tools. At its core the system must handle automated responses, solid contact management and clear analytics/reporting, all powered through Meta API plus companion Web and App APIs so I can plug it into anything later without rewriting code.

Beyond the usual CRM basics, I also need three business-critical add-ons built in:

• Payment processing tied directly to chat threads
• A lightweight ticketing flow for customer support
• Marketing automation so I can trigger broadcasts or drip sequences from defined events

Here is what success looks like to me:

• Incoming WhatsApp messages are captured instantly and shown against the right contact record.
• I can create rule-based auto-replies or chatbots through a simple UI.
• Dashboards show message volumes, response times, conversion metrics and campaign performance at a glance.
• Payment links or checkout widgets can be sent from inside the chat and reconciled back to each customer.
• Support tickets open from a message, track status, and close when resolved.
• Marketing workflows can be scheduled or triggered by tags, dates or transaction events.
• The entire system exposes clean Meta, Web and App API endpoints so any future service can read or write data without friction.

Keep the code modular and well-documented; I will need to hand it to in-house developers later. Let me know which tech stack you propose, estimated timeline, and any previous WhatsApp API projects you can point me to.