If you’ve ever sent an email campaign and watched it disappear into the void — open rates of 18% on a good day, replies almost never — you already know the problem. WhatsApp is different. Messages land in the same inbox where people talk to their family. Open rates are consistently above 95%. Most messages are read within three minutes.

The only question is how to reach more than a handful of people at once, without paying ₹5 per user per month to some reseller who adds nothing on top of Meta’s own API.

Here’s the truth: there’s a way to send WhatsApp campaigns to thousands of contacts, and the only cost is Meta’s own per-message fee — which for most campaigns in India comes to less than ₹1 per message.

Why WhatsApp Has 95%+ Open Rates

WhatsApp is where people live. In India, it’s the default communication layer for everything — family groups, business updates, local news, church announcements. When a message arrives, people check it. There’s no spam folder, no promotions tab, no aggressive unsubscribe culture.

Email open rates have been declining for years. SMS is cheap but has no threading, no media, no read receipts. WhatsApp gives you all of that — rich media, delivery receipts, reply threads — in a channel your audience already monitors obsessively.

WhatsApp Business App vs. WhatsApp Cloud API

This is where most people get confused, and where most “free” solutions fall short.

WhatsApp Business App is the free app you download from the Play Store. It’s great for one-person businesses — you can create a business profile, set an auto-reply, and use broadcast lists. But broadcast lists are capped at 256 contacts. That’s it. And each contact must have saved your number. It doesn’t scale.

WhatsApp Cloud API is the actual infrastructure Meta provides for businesses that need to go beyond 256. It supports unlimited contacts, message templates, bulk campaigns, chatbots, and multi-user inboxes. Until recently, accessing it required a developer, a Meta Business Verification, and a third-party BSP (Business Solution Provider) charging monthly fees per user.

That’s the bottleneck platforms like ThinkMsg remove.

How ThinkMsg Gives You the Cloud API for Free

ThinkMsg is a platform built on top of the WhatsApp Cloud API. You connect your own WhatsApp Business number directly to Meta — so you’re paying Meta’s rates, not an intermediary’s markup. ThinkMsg’s platform itself is free: no per-user fee, no monthly seat cost, no cap on contacts.

You get campaigns, a unified inbox, flow automation, a media library, and team support — all at no charge. The only money that changes hands is between you and Meta, based on the messages you send.

Step-by-Step: Send Your First Campaign

Step 1: Connect your number

Sign up at app.thinkmsg.com. You’ll be guided through connecting a WhatsApp Business phone number to Meta’s Cloud API. You’ll need a Facebook Business account — the verification is straightforward and usually takes a few hours. Once connected, your number is live.

Step 2: Create a message template

WhatsApp requires pre-approved templates for outbound campaigns (messages to people who haven’t messaged you first). In ThinkMsg, go to Templates → New Template. Write your message, choose a category (Utility or Marketing), add any variables like {{name}} or {{amount}}, and submit to Meta for approval. Most templates are approved within minutes.

Step 3: Upload your contacts

Go to Contacts → Import. Upload a CSV with columns for phone number and any variables you want to personalise. ThinkMsg handles formatting, deduplication, and country code normalization. Your list is ready to use immediately.

Step 4: Send the campaign

Go to Campaigns → New Campaign. Pick your template, select your audience (the full list, a segment, or a filtered subset), and review the preview. Hit Send. Messages go out via Meta’s infrastructure with delivery receipts in real time.

That’s the whole process. A 1,000-contact campaign takes about ten minutes to set up, costs roughly ₹80–780 in Meta fees depending on template category, and typically gets 95%+ delivery.

The Real Cost

ThinkMsg charges nothing. Meta charges per-message:

  • Utility messages (payment reminders, appointment confirmations): ~₹0.13 per message
  • Marketing messages (promotions, announcements): ~₹0.78 per message

A 1,000-contact marketing campaign costs roughly ₹780 — less than a single sponsored post, with far better reach and measurability.

Start for Free

You don’t need a developer. You don’t need a sales call. You don’t need a monthly contract.

Create a free ThinkMsg account and send your first campaign today.