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I need a production-ready way to push both monthly bills and promotional campaigns through WhatsApp straight from an Excel sheet. Each row will hold the customer’s number plus dynamic fields that should populate a pre-approved template, attach an image (PDF for bills or banner for promos) and add a clickable link. Here’s what I expect: • A working connection to the official WhatsApp Business API or a reliable gateway that you can vouch for. • A lightweight script or small app (Python, Node, or similar) that reads the Excel file, matches each row to the correct message template (bill or promo) and dispatches it automatically. • Error handling, delivery status capture and a simple log I can export back to Excel. • Clear, step-by-step setup notes so I can reinstall or hand it to another teammate without hassle. Time is critical—I’d like this running ASAP. When you apply, show me past work that proves you have already built or integrated WhatsApp messaging solutions, especially anything that involved attachments or Excel/CSV automation. If you have multiple approaches (cloud vs on-premise, Twilio vs direct Meta API, etc.) feel free to mention them, but be concise and focus on what you’ve actually delivered before.
Project ID: 40702583
11 proposals
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Active 2 days ago
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11 freelancers are bidding on average ₹4,968 INR for this job

WhatsApp Business API Integration Expert I am an experienced software developer and WhatsApp Business API Integration Expert specializing in designing and implementing secure, scalable, and production-ready WhatsApp communication platforms for businesses. I have hands-on expertise in the complete WhatsApp Business API lifecycle, from Meta Business and WhatsApp Business Account configuration through API integration, webhook implementation, message processing, automation, monitoring, and production deployment. My expertise includes WhatsApp Cloud API, Meta Graph API, Webhooks, Phone Number ID configuration, access-token management, message templates, OTP/verification workflows, media messaging, delivery/read status tracking, and automated customer communication. I develop robust backend solutions using ASP.NET Core Web API and SQL Server, integrated with modern React.js frontends. I can build complete WhatsApp communication systems where incoming customer messages are received through secure webhooks, processed by business logic, stored in the database, and responded to automatically or through an operator chat interface.
₹20,000 INR in 7 days
4.3
4.3

Hi, I seen through your project and understand you are seeking a production-ready automation framework to programmatically dispatch monthly billing details and promotional media campaigns via WhatsApp straight from an Excel ledger. I recognize that robust data extraction for dynamic template variables, handling multi-format media attachments (PDFs/banners), logging real-time delivery status, and setting up a secure API connection are critical to your operations. let's connect in the chat for further process.
₹20,000 INR in 5 days
2.7
2.7

As an experienced developer with deep skills in Data Processing, I know exactly how to meet your urgent and complex project demands. My expertise in Python and Node.js will ensure a lightweight script or small app that reads your Excel data, matches it to the correct template and dispatches the messages automatically—no hassle involved. I'm also well-versed in error handling, delivery status capture—essential for managing a large volume of WhatsApp messages—and can provide a simple log exportable back to Excel. Your project will benefit from my thorough understanding and hands-on experience with WhatsApp Business API. In several past projects, I have built excellent WhatsApp messaging solutions similar to what you require. For instance, I developed an application for a large insurance company that sent out monthly policy payments through WhatsApp with PDF invoice attachments. Best regards, Akif K
₹1,050 INR in 7 days
1.6
1.6

Greetings I am Erinc I am a Web Developer knowledgeable in Data Processing and Excel. I can confirm I am able to help with your solution to push bills inside Excel strictly under your budget. I am able to start now and on desk everyday. Looking forward to hear from you. Thanks for your consideration.
₹1,050 INR in 7 days
1.3
1.3

I CAN BUILD YOUR EXCEL-TO-WHATSAPP AUTOMATION WITH THE OFFICIAL META WHATSAPP BUSINESS API, DYNAMIC TEMPLATES, PDF/IMAGE ATTACHMENTS, DELIVERY STATUS, AND EXPORTABLE LOGGING. I have strong experience with WhatsApp integrations, API automation, Python/Node.js, Excel/CSV processing, webhooks, and workflow automation. I’ll build a lightweight system that reads each Excel row, identifies the bill/promo template, maps the dynamic fields, attaches the required PDF or banner, adds the clickable link, and sends the message automatically. I’ll also implement: Meta WhatsApp Business API integration Bill and promotional template routing Dynamic Excel field mapping PDF/image media handling Delivery, failure, and API response tracking Retry/error handling Exportable Excel/CSV delivery logs Simple configuration and setup documentation For reliability, I’d recommend direct Meta Cloud API where possible, avoiding unnecessary third-party dependencies and keeping the system easy to hand over. I’ve worked on WhatsApp/CRM and automation workflows involving APIs, webhooks, customer data, and automated messaging. I can provide relevant examples/screenshots during the review stage rather than claiming unrelated work as WhatsApp samples. I can prioritize this as an ASAP implementation and start immediately. Regards, Yasir Ahmed
₹800 INR in 4 days
0.0
0.0

Hi, I can build a production-ready WhatsApp automation that reads your Excel sheet, sends bill or promotional templates with PDFs/images and clickable links, and records delivery status and errors back into an exportable log. I can implement this using Python or Node.js with the official Meta WhatsApp Business Cloud API or Twilio, including dynamic template fields, attachment handling, retries, and clear setup documentation. I can start immediately and keep the solution lightweight, reliable, and easy for your team to maintain.
₹6,000 INR in 7 days
0.0
0.0

Hi, I can build this production-ready WhatsApp automation using the official Meta WhatsApp Business Cloud API or a reliable gateway such as Twilio. I’ll create a lightweight Python/Node.js solution that reads Excel rows, maps bill/promo templates with dynamic fields, sends PDFs/banners and clickable links, captures delivery/read/error statuses, and exports a clean Excel log. I’ll also provide complete setup and handover documentation. I have experience integrating WhatsApp messaging workflows, including automated notifications and media-based messaging. I can share relevant past work/examples upon request. I’m available to start immediately and can prioritize getting the system live ASAP.
₹1,050 INR in 3 days
0.0
0.0

Hi — Team Humaki reviewed "Excel-Integrated WhatsApp Messaging API". We read the brief: need a production-ready way to push both monthly bills and promotional campaigns through WhatsApp straight from an Excel sheet. Plan: (1) reproduce the reported issue on a staging copy; (2) ship a working slice you can verify, then iterate; (3) hand off working automation/tests, sample run output, and how to re-run. Stack focus: Python, JavaScript/web, test automation. We will flag anything outside the stated scope before coding. Fixed price as bid with clear milestones — we can start as soon as awarded.
₹600 INR in 1 day
0.0
0.0

The part that decides whether this survives in production is not the script, it is the template approval and the send pacing behind it. The official WhatsApp Business API only delivers a pre-approved template to a customer who has not messaged you first, and every variable in that template has to match the approved shape exactly, so a bill row with an empty field fails at Meta rather than in your spreadsheet. The script therefore validates each row against the template before anything goes out, and hands the bad rows back to you instead of sending a broken message to a customer. Sending is paced rather than fired in a loop, since a new number pushing a promotional blast gets its quality rating dropped and its throughput cut soon after, which is the usual way one of these dies in week two. Each message's delivery callback is written back against its own row, so you see sent, delivered and failed per customer, and only the genuinely retryable failures are retried. Bills and promotions are one pipeline with a different template and a different attachment, so the banner and the billing PDF ride the same path rather than needing two separate tools. The thing that moves the timeline most: do you already hold a verified WhatsApp Business account with the bill and promo templates approved, or is getting those through Meta approval part of this?
₹1,100 INR in 5 days
0.0
0.0

Hi, I can build the Excel-to-WhatsApp workflow you described using the official WhatsApp Business API or an appropriate supported gateway. The solution would read customer rows from Excel, map the required fields into approved message templates, attach the corresponding PDF/image where needed, send the messages automatically, and write delivery/error status back into a clear Excel log. I would also include error handling, configuration outside the source code where practical, and step-by-step setup notes so the workflow can be reinstalled or handed to another team member. I want to be transparent that I don’t have a previous Freelancer project showing this exact WhatsApp integration, so I won’t claim otherwise. My background is in automation, data workflows, and technical implementation, and I can build this around the official API requirements and validate the full flow using your Meta/gateway credentials. I can start immediately and target delivery within 2 days once the required API access, approved templates, and sample Excel structure are available.
₹1,500 INR in 2 days
0.0
0.0

Hyderabad, India
Member since Jun 15, 2026
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