Contact person: Business Client

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Location: New Delhi, India

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"I need a custom-built web application that lets me draft and upload thousands of PDF files, match each one to the right recipient, and push them out in bulk by email, SMS, and WhatsApp in a single workflow. Everything has to run from one dashboard with real-time status reporting and retry logic for any failed deliveries.

API connectivity is essential. The platform must hook into payment gateways (so a customer can settle an outstanding balance directly from the message), my existing CRM system (to pull contact lists and write back delivery events), and the messaging services themselves for each channel. RESTful endpoints and secure webhooks will keep data moving smoothly between all three.

Core flow
• Draft Pdfs
• Drag-and-drop or batch import PDFs
• Map each document to its recipient data from the CRM
• Choose channels (email, SMS, WhatsApp) and schedule or send immediately
• Monitor delivery, open, and click metrics in an activity log
• Record every event back to the CRM and trigger optional payment links through the gateway API

Acceptance criteria
• A hosted solution (cloud or on-prem) that supports at least 10,000 dispatches per hour without throttling
• Successful integrations with one payment gateway, one CRM, and the selected messaging APIs, demonstrated in a staging environment
• Source code, setup scripts, and concise deployment documentation

Preferred tech is flexible—Node.js, Python, or a comparable stack that cleanly integrates with Twilio, SendGrid, WhatsApp Business API, or similar services—but stability and clarity of code matter more than the language. If you can deliver a smooth, audit-ready dispatch process with the integrations above, I’m ready to move quickly." (client-provided description)