I need my live website tied into three key platforms right away: a payment gateway, my CRM, and an email-marketing tool. The goal is to automate every step—from checkout through customer follow-up—so data flows instantly and accurately between all systems without manual intervention. Please connect the payment API (Stripe, PayPal, or a comparable gateway), map incoming transaction data to the CRM, then trigger the correct email sequences in the marketing platform. Real-time syncing, webhooks, and clean error handling are essential because the site is already in production. Deliverables • Fully operational integrations for payment, CRM, and email tools • Automated workflows that capture payments, create/update CRM records, and launch the right email campaigns • End-to-end testing with sample transactions and confirmation logs • Clear hand-off notes covering code changes, credentials, and rollback steps Everything needs to be implemented, tested, and deployed as soon as possible, so please be comfortable moving quickly while keeping the codebase well-documented and maintainable.