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I already run a Windows-based CRM and now need to plug in a reliable WhatsApp automation layer. The core requirement is an API or SDK that lets my system queue and send messages with a controllable time delay, then receive and handle replies in real time. Key capabilities I must have: • Outbound messages of every common type—plain text, images and documents. • Delivery to both individual chats and groups, with the same code paths. • Event hooks or webhooks so incoming messages, read receipts and errors can be pushed back into my CRM. If you already maintain a compliant WhatsApp automation engine, I’d like the full integration kit: endpoint documentation, authentication method, rate-limit specs and a small Windows demo app or script that proves timed batch sending works. Successful delivery means I can schedule a mixed media campaign from my CRM, watch it drip out on the timetable I set, and see conversations thread back automatically. Let me know your architecture, any technical prerequisites and an estimated turnaround to get a working proof-of-concept running on our Windows server.
Project ID: 40198915
12 proposals
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Active 2 mos ago
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12 freelancers are bidding on average ₹9,038 INR for this job

Hi, I can integrate a WhatsApp automation layer into your Windows CRM. I will provide an API/SDK that queues and sends messages (text, images, documents), handles group and individual chats, and pushes incoming messages, read receipts, and errors back in real time. A small Windows demo will show timed batch sending working end to end, with full documentation for authentication, rate limits, and integration. Let’s discuss your CRM setup so I can provide a timeline for a working proof-of-concept. Best Regards, Usama
₹7,000 INR in 3 days
4.9
4.9

Hi there, I can plug a compliant WhatsApp automation API into your Windows CRM with timed message queues, full media support, and real-time webhooks for replies, receipts, and errors. Works for both individual and group chats. I’ll provide API docs, auth and rate limits, plus a small Windows demo proving scheduled batch sending, and a clear POC timeline. Best,
₹16,000 INR in 1 day
5.0
5.0

This is a solid, well-defined WhatsApp automation use case, and I’ve integrated CRM systems with WhatsApp layers that support queued, delayed sending and real-time inbound handling. I can deliver an API-based setup (WhatsApp Business API or compliant automation layer) supporting text, media, documents, and group messaging with unified logic. You’ll get full webhook wiring for replies, read receipts, and error events back into your Windows-based CRM, plus a small Windows demo to prove timed batch delivery works end-to-end. I’ll clearly document auth, rate limits, and deployment so your team can extend it confidently. Looking forward for your positive response in the chatbox. Best Regards, Arbaz Ali
₹9,000 INR in 7 days
5.2
5.2

Hi, I’m Rahul Singh from Team Velora. We can integrate a reliable WhatsApp automation layer into your Windows-based CRM, enabling scheduled outbound messages (text, images, documents) to individuals or groups, with full delivery and reply tracking. The system will support webhooks or event hooks so incoming messages, read receipts, and errors flow back into your CRM in real time. A small demo app will prove timed batch sending, along with full documentation for endpoints, authentication, and rate limits.
₹9,500 INR in 3 days
4.1
4.1

Hello, I’m experienced in Window based CRM to streamline lead management, sales pipelines, and automation. I can handle CRM configuration, workflows, integrations, and reporting to match your business needs. >> I would be happy to connect and discuss your project in detail. Let's have a quick chat or call to talk more about your project.<< Best Regards, Pritpal Kaur V
₹12,000 INR in 7 days
2.8
2.8

Hi there, You’re absolutely in the RIGHT PLACE. I’ve delivered SIMILAR PROJECTS multiple times and know EXACTLY how to execute this efficiently and correctly from day one. To lock down the SCOPE, TIMELINE, AND PRICING, I’ll need to ask you a few key questions. Unfortunately, Freelancer’s 1500 CHARACTER LIMIT doesn’t allow me to break everything down properly here. Let’s jump on CHAT so I can show you my PROVEN PAST WORK, walk you through the REAL RESULTS I’ve delivered, and outline a CLEAR ACTION PLAN for your project. You’ll immediately see why my approach is DIFFERENT and EFFECTIVE. If you’re serious about getting this done RIGHT, I’m ready to move forward. Looking forward to CONNECTING and WINNING TOGETHER. Cheers, Mayank B
₹7,000 INR in 7 days
3.0
3.0

Hi! I’m an experienced developer with strong skills in WhatsApp API integrations and automation. I can build and provide a reliable API/SDK that lets your Windows CRM queue and send messages with controllable delays, handle text, images, and documents, support individual & group chats, and return incoming messages, delivery receipts, and errors via webhooks into your CRM. I will also deliver endpoint documentation, authentication setup, rate-limit specs, and a small Windows demo script proving scheduled batch sending works. Ready to start and deliver a working proof-of-concept quickly. Thanks!
₹7,000 INR in 7 days
2.2
2.2

New freelancer. Experienced developer. Fully committed to your success. I’m building my reputation, which means I care more about quality and satisfaction than the paycheck, giving you dedicated effort, clear communication, and excellent results at a competitive rate. I'm also offering 6 months of free maintenance!!! I would be thrilled to lead your project of integrating a reliable WhatsApp automation layer into your CRM system. With my extensive skills in Automation, Software Architecture, and Development, I have a solid track record of creating effective and robust API and SDK solutions that can meet your specific needs. Furthermore, my proficiency in HTML, CSS, JavaScript React, Vue, Node.js would prove invaluable for delivering the required features of outbound message delivery, supporting diverse message types like plain text, images and documents, and catering to individual chats and groups alike.
₹7,000 INR in 7 days
0.0
0.0

If WhatsApp messages don’t queue properly, respect delays, or sync back into your CRM in real time, the automation breaks that’s the exact problem I solve. I read your post carefully and understand you need more than a basic WhatsApp tool. You’re looking for a reliable, compliant WhatsApp automation layer that integrates with your Windows-based CRM, supports timed batch sending, mixed media (text, images, documents), and real-time inbound events through webhooks. I specialize in CRM automation, API/SDK integrations, and workflow architecture. I’ve worked on similar projects where CRMs could schedule delayed WhatsApp campaigns, send media files, receive replies instantly, and log delivery, read receipts, and errors back into the system automatically. I design API-first, event-driven solutions that stay stable and scalable. For your project, I can deliver a clean integration architecture, webhook handling, auth and rate-limit setup, plus a Windows proof-of-concept showing timed batch sending. Quick questions: Do you already have a WhatsApp API provider? Expected daily message volume? If this fits, message me and let’s get a working POC running.
₹8,000 INR in 5 days
0.0
0.0

Hello, Thank you for the clear and precise requirements—it's evident you're looking for a robust, production-grade WhatsApp integration that seamlessly extends your existing Windows-based CRM without unnecessary complexity. I specialize in building exactly these types of automation layers using n8n as the orchestration engine, connected to the official WhatsApp Business Cloud API (hosted by Meta) via trusted providers like 360Dialog or Twilio. This setup supports all your required message types (text, images, documents), individual/group delivery, controllable delays via workflow scheduling, and real-time webhooks for incoming messages, read receipts, and errors—pushing everything directly back into your CRM via API calls or database updates. I can deliver a complete, self-hosted n8n instance on your Windows server (runs natively on Node.js), full endpoint/webhook documentation, rate-limit handling, and a working proof-of-concept with timed batch sending in 3–5 days. To ensure the best fit: Do you already have an approved WhatsApp Business Account and preferred provider (e.g., Meta Cloud API, 360Dialog, Twilio)? What is the name/version of your current CRM, and does it expose API endpoints or webhooks for receiving updates? Are there any specific compliance needs (e.g., opt-in handling, template requirements for outbound)? I'm confident we can get a reliable POC running quickly—happy to discuss details further or prepare a tailored proposal. Best regards, [HAITHAM]
₹5,500 INR in 7 days
0.0
0.0

Faridabad, India
Member since Jan 5, 2025
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