Ask most shop owners in India how customers prefer to get in touch and the answer is WhatsApp. People want to send a photo, ask the price, check if the size is in stock, and decide in their own time. A website form feels formal; a phone call feels like pressure. A chat feels normal.
Click to WhatsApp ads are built for exactly that habit. Someone taps the ad on Facebook or Instagram and a WhatsApp chat with your business opens, ready to send. This post explains how these WhatsApp ads on Facebook and Instagram work, how to connect your number, what to put in the first message, why reply speed decides everything, and how to tell whether the chats are turning into sales.
How click to WhatsApp ads work
The ad itself looks like any other Meta ad: an image, a video or a carousel with text and a button, usually labelled “Send WhatsApp message”. The difference is the destination. Instead of a website or a form, the tap opens WhatsApp on the person’s phone with a chat to your business number already started. Often a short message is prefilled, such as “Hi, I saw your ad and would like to know more”, so they just press send.
Behind the scenes, you build these in Ads Manager by choosing an objective that supports messaging, then picking WhatsApp as the place where the conversation happens. Meta then looks for people who are likely to start a chat, rather than people likely to click a link.
From the customer’s side, nothing new is needed. They use the WhatsApp they already have, and the conversation sits alongside their family and friend chats, which is a big part of why it works.
Before you start: the number and who answers it
Two decisions come before any ad.
Which WhatsApp number
The ad sends chats to a WhatsApp Business number connected to your Facebook Page. That can be a number on the free WhatsApp Business app or one on the WhatsApp Business Platform (the API) through a provider. For most small shops and services the app is enough to start. Businesses with several staff answering, large volumes or a need for automation tend to move to the platform; our existing post comparing the WhatsApp Business app and API covers that choice, so we will not repeat it here.
Use a number the business owns, not a staff member’s personal phone. If that person leaves, so does the chat history with every customer who replied to your ads.
Who replies, and when
This matters more than the ad. A person who taps the ad has just shown interest. If they wait half a day for a reply, many will have asked a competitor in the meantime. Before launching, decide who is responsible for ad chats during your working hours, and run the ads mainly when someone can answer.
Connecting WhatsApp to your Facebook Page
The general steps are the same whichever version of the screens you see:
- Make sure your WhatsApp Business profile is complete: business name, category, description, address and hours.
- In your Facebook Page settings, find the section for linked accounts and choose WhatsApp.
- Enter the business WhatsApp number and confirm it with the code Meta sends to that number.
- In Ads Manager, when you create the ad set, choose WhatsApp as the message destination and check that the right number appears.
- Send yourself a test: preview the ad, tap the button on a phone and see the chat open with your business.
If the number does not appear in Ads Manager, the link between the Page and WhatsApp is usually the cause. Check it in the Page settings again, and that the person creating the ad has the right access to the Page.
The first message: greeting and prefilled text
You get two chances to shape the start of the conversation.
The prefilled message
Ads Manager lets you set the text that appears in the customer’s message box when the chat opens. Make it specific to the ad: “Hi, I’d like the price of the 6-seater dining set” is far easier to answer than “Hi”. It also tells you which ad the person saw, which helps when you run several.
Depending on the setup, you may also be able to offer a few suggested questions the person can tap, such as “What are your prices?” or “Do you deliver to Salt Lake?”. Keep them to the questions people actually ask.
The automatic greeting
The WhatsApp Business app has a greeting message that goes out to new contacts, and an away message for outside hours. Set both. A good greeting confirms they reached the right business and tells them what happens next: “Thanks for messaging Sharma Furniture. Someone from the shop will reply shortly. Meanwhile, tell us which item you are interested in.” The away message should give your hours honestly. Our guide to quick replies and labels in WhatsApp Business shows how to set up saved answers so replies stay fast without sounding robotic.
Replying well once the chats start
A WhatsApp chat from an ad is a sales conversation, not a support ticket. A few habits make a real difference:
- Answer the question asked. If they asked the price, give it, or the range, before anything else.
- Use photos and short voice notes. They are the strength of the channel; a photo of the actual item in stock beats a catalogue link.
- Ask one helpful question back. “Which area are you in?” or “When do you need it?” moves things on.
- Offer a clear next step. Visit the shop, book a slot, pay a deposit, share an address for delivery.
- Do not flood them. One follow-up after a day is reasonable. Repeated messages get you blocked or reported, and reports can affect your number.
Label each chat by stage in the app: new, quoted, ordered, not interested. That small habit is what lets you measure the ads later.
Measuring which chats became sales
Measurement is the weak spot of WhatsApp ads, because the sale happens in a private conversation that Meta cannot see. Ads Manager reports conversations started from the ad, and the cost per conversation. That tells you how cheaply you are starting chats, not how many turned into money.
To close the gap:
- Use a different prefilled message per ad so you know which ad each chat came from.
- Label chats by stage and count the “ordered” label each week.
- Keep a simple sheet: date, ad, chat started, outcome, order value.
- Compare spend for the week with orders from those chats, not with the number of chats.
Businesses on the WhatsApp Business Platform can sometimes send purchase events back to Meta so the ad system learns which chats led to sales. That needs a provider and more setup. Our post on measuring WhatsApp marketing results covers the wider picture across ads, website buttons and broadcasts.
When WhatsApp ads are the wrong choice
They are not right for everyone. Think twice if nobody can reply during the hours the ads run, if your sale needs a long explanation that a web page does better, or if you sell many low-value items online, where a direct checkout is simpler for the customer. In those cases a website or a lead form may suit you better. The overview of how Meta campaigns work for small firms compares the destinations, and our broader digital marketing services page shows how ads and WhatsApp follow-up fit together.
Frequently asked questions
Do I need the WhatsApp Business API to run these ads?
No. A number on the free WhatsApp Business app, linked to your Facebook Page, can receive chats from these ads. The API becomes useful when several people need to answer from one number, when volumes are high, or when you want automation and deeper reporting through a provider.
Can customers see my personal number if I use my phone for the business?
Whatever number receives ad chats is visible to every customer who messages, so use a dedicated business number. It keeps your personal number private, and it means the chat history stays with the business if staff change or the phone is replaced.
Can I run click to WhatsApp ads on Instagram too?
Yes. The same ad can show on Instagram placements, and tapping it opens the WhatsApp chat in the same way. Check your Instagram account is connected to the same business and Page, and preview the ad in Instagram placements before publishing.
If you want WhatsApp ads set up with the greeting, labels and tracking sheet in place from day one, our Facebook and Instagram ads service handles the ad side and works with you on the reply routine.
Next in this series: Instagram Ads for Business: Run Ads on Instagram Well
