WhatsApp Marketing: Broadcast Lists, Catalog & Strategy for India
How the Business App, the Business API, broadcast lists and the product catalog actually work — and the one rule about broadcast lists most businesses get wrong.
For a business in India, WhatsApp isn't an extra channel — it's often the primary one. Customers ask questions on it, place orders on it, and expect a reply on it faster than on any other platform. But "WhatsApp marketing" gets treated too casually: businesses assume they can message anyone whose number they have, and assume the free Business App does everything the paid API does. Neither is true, and both mistakes get numbers banned.
This guide is one spoke of Digital Hangover's Social Media Marketing guide — start there for how WhatsApp fits alongside Instagram, Facebook and the other platforms in a full social strategy.
WhatsApp Business App vs WhatsApp Business API
These are two different products built for two different scales of business. Picking the wrong one is the most common early mistake.
| Aspect | WhatsApp Business App | WhatsApp Business API |
|---|---|---|
| Who it's for | Solopreneurs, small businesses, one person managing chats | Higher-volume businesses, multiple agents, CRM/helpdesk integration |
| Cost | Free to download and use | No app cost, but you pay a per-conversation fee via a Business Solution Provider |
| Access | Direct download from the app store | Through a provider (e.g. Interakt, WATI, Gallabox) — no standalone consumer app |
| Users | One phone plus a few linked devices, realistically one person | A shared team inbox, multiple agents replying at once |
| Catalog | Built in, free, manually maintained | Same catalog, usually managed and synced through the provider's dashboard |
| Broadcast lists | Manual, capped, only reaches contacts who saved your number | Automated broadcast and drip sequences, approved template messages |
| Automation / chatbot | Quick replies and an away message only | Full chatbot flows, triggered and scheduled messages |
| Best starting point | A single-location shop, boutique, clinic, freelancer | A business fielding 50+ chats a day, or wanting WhatsApp tied into its CRM |
Most small and mid-size businesses in India start on the free App and only move to the API once volume makes manual replying genuinely unmanageable — there's no reason to pay for the API before you've outgrown the App.
Broadcast lists — how they actually work
A WhatsApp broadcast list looks like a group text, but it isn't one — and the difference is the single most misunderstood rule in WhatsApp marketing.
A broadcast list only delivers your message to a contact if that contact has saved your business number in their own phone. If they haven't, your message simply doesn't arrive — you won't get an error, it just fails silently. This is why businesses that build a broadcast list from a purchased or scraped number list see near-zero delivery: most of those people never saved the sender's number.
This is different from a WhatsApp Group, where every member sees every message (and each other's number) regardless of who's saved whom. Groups are public and noisy; a broadcast list is private — each recipient sees the message as a normal one-to-one chat from you, with no visibility into who else received it.
The honest practice: only add someone to a broadcast list after they've explicitly opted in — through a sign-up form, a QR code at your counter, or a message where they've clearly agreed to hear from you — and ask them to save your number when they do. Skip the opt-in and you're not just wasting the message; you're also the kind of behaviour WhatsApp actively looks for when deciding which numbers to restrict.
Setting up your WhatsApp Business catalog
The catalog is the single most underused feature on WhatsApp Business — and one of the most useful, especially for D2C brands and local retail in India, where a lot of buying already happens by chatting directly with a seller.
- Open Business tools › Catalog in the WhatsApp Business App.
- Add each product or service with a clear photo, name, price and short description — treat it like a mini product page, not a snapshot.
- Group items into categories once you have more than a handful, so a browsing customer isn't scrolling through everything at once.
- Attach the catalog to your business profile so it's visible the moment someone opens a new chat with you, not something they have to ask for.
- Keep it current — remove sold-out items and update prices; a stale catalog undermines trust faster than having no catalog at all.
- Share the catalog link directly — in your Instagram bio, in a story, in an ad, or in a reply to an enquiry — so people move straight from browsing to a chat, without leaving WhatsApp.
For boutiques, home-based sellers, jewellers and other D2C businesses running a "message to order" model, the catalog effectively turns WhatsApp into a lightweight storefront: a customer can browse, ask a question, and complete the purchase in one continuous conversation.
Click-to-WhatsApp ads: using WhatsApp as a paid channel
WhatsApp itself has no native ad-buying system — paid distribution into WhatsApp runs through Meta Ads Manager, the same system behind Facebook and Instagram ads, using the Engagement objective set to end in a WhatsApp conversation instead of a website or lead form. These are commonly called Click-to-WhatsApp Ads (CTWA).
The ad itself can run on Facebook feed, Instagram feed, Stories, Reels or Marketplace — all the usual Meta placements — but the call-to-action opens a WhatsApp chat with your business instead of a landing page. There's no form to fill and no page to load, which is a large part of why these ads tend to convert well against India's chat-first buying behaviour.
Once someone messages in, you get a free-messaging window to respond, answer questions and close the sale conversationally — often straight from the catalog above. Ads-originated conversations are commonly reported to get a longer free window (around 72 hours) than WhatsApp's usual 24-hour customer-service window, though this is a Meta policy detail worth reconfirming at campaign-setup time rather than treating as fixed. Standard WhatsApp Business messaging rules, including consent, apply to any follow-up after that.
This is a genuinely new sub-topic for the site — we don't yet have a dedicated Click-to-WhatsApp Ads guide; when we do, it will be linked from here.
Tools that run WhatsApp marketing at scale
Once you're on the Business API, you'll access it through a Business Solution Provider — Interakt, WATI and Gallabox are the names you'll see most often in India, each bundling a shared team inbox, broadcast automation, and catalog sync on top of the raw API.
We won't re-run that comparison here — for real pricing and a feature-by-feature breakdown of Interakt vs WATI vs Gallabox, see our Marketing Automation for Indian SMBs guide.
Is WhatsApp marketing legal in India?
Sending business messages on WhatsApp is allowed, but consent is the condition, not a formality. WhatsApp's own Business Policy requires opt-in before you message someone commercially, and India has its own rules governing unsolicited commercial communication that apply regardless of the platform.
In practice, the risk is less about a legal notice and more about your number: WhatsApp actively bans business accounts flagged for spam-like behaviour — a high block rate, user complaints, or bulk messaging people who never opted in are exactly the signals that trigger it. Losing a number mid-campaign, along with its chat history, is a real operational cost, not a hypothetical one.
This isn't legal advice, and rules do get updated — check WhatsApp's current Business Policy and any applicable Indian regulations directly before you build a messaging campaign of any size.
Frequently asked questions
What is WhatsApp marketing?
Using WhatsApp's business tools — the free Business App or the paid Business API — to talk to customers directly: broadcast lists, a product catalog, quick replies, and automated messages when using the API through a provider. In India, it works because WhatsApp is where most customers already are, and messages get opened far more often than email.
What's the difference between the WhatsApp Business App and the WhatsApp Business API?
The App is free, single-device, and built for one person managing chats manually — good for small businesses. The API has no download; you access it through a Business Solution Provider like Interakt, WATI or Gallabox, pay per conversation, and get multiple agents, automation and CRM integration — built for higher volume.
Can I message anyone on a WhatsApp broadcast list?
No. A broadcast list only delivers to contacts who have saved your business number in their phone — and you should only add people who've explicitly opted in to hear from you. Message someone who hasn't saved your number or agreed to be contacted, and it either won't reach them or it risks your number being reported.
How do I set up a WhatsApp Business catalog?
Open the WhatsApp Business App, go to Business tools › Catalog, and add each product or service with a photo, name, price and description. Attach it to your business profile so new chats see it immediately, keep it updated, and share the catalog link in your bio, stories or ads to drive direct-to-chat sales.
Is WhatsApp marketing legal in India?
Sending business messages on WhatsApp is allowed, but only with the recipient's explicit consent — WhatsApp's own Business Policy and India's regulations on commercial messaging both require opt-in, and WhatsApp bans numbers flagged for spam-like behaviour. This isn't legal advice — check WhatsApp's current Business Policy and applicable Indian rules before running campaigns.
Want WhatsApp working alongside the rest of your social strategy?
We build broadcast, catalog and content strategy into one social media plan — not a WhatsApp add-on bolted onto nothing.