For many customers, sending a WhatsApp message is easier than filling in a form or making a phone call. That makes WhatsApp one of the most useful sales tools a small business can have. But there's a big difference between using WhatsApp and doing WhatsApp marketing well. This guide walks you through the setup, the messages that work, the rules you must follow and what it costs, step by step.
Why WhatsApp works for small businesses
WhatsApp is personal. Messages arrive in the same app people use to talk to friends and family, so they get seen. Used respectfully, that closeness helps you:
- Answer enquiries fast, while the customer is still interested.
- Share prices, photos and catalogues right inside the chat.
- Confirm bookings and send reminders, which helps reduce no-shows.
- Bring customers back with offers, new arrivals and reorder reminders.
- Collect reviews by sending a link right after a good experience.
The same closeness is also the risk. Send too much, or send to people who never asked, and you'll be blocked, reported, and possibly restricted by WhatsApp. Good WhatsApp marketing is about being helpful and expected, not loud.
WhatsApp Business app or Business Platform (API)?
There are two main ways for a business to use WhatsApp, and choosing the right one saves a lot of trouble.
The WhatsApp Business app
The WhatsApp Business app is free to download and works on your phone. It gives you a business profile, a product catalogue, quick replies, greeting and away messages, and labels to organise chats. It's ideal when:
- One person or a small team handles chats.
- You get a manageable number of messages each day.
- You mostly reply to people who message you first.
The WhatsApp Business Platform (API)
The Business Platform, often called the WhatsApp API, is built for scale. It connects WhatsApp to software, so several team members can share one number, chatbots can answer common questions, and messages can be sent automatically from your website, store or CRM. It's the better choice when:
- Several people need to answer chats from one number.
- You want automatic order updates, booking confirmations or reminders.
- You want to send approved marketing messages to a large opted-in list.
- You want chats to flow into a CRM as tracked leads.
Simple rule: start with the free app. Move to the API when your volume or your team outgrows it. Our WhatsApp marketing service covers both, and we often begin with the app and upgrade later.
Set up WhatsApp marketing in 7 steps
Step 1: Use a dedicated business number
Keep business and personal chats separate. A dedicated number looks more professional, can be shared with staff, and won't disappear if one person leaves.
Step 2: Complete your business profile
Add your logo, a clear description, address, working hours, website and email. Customers check this before they trust you with a payment or a booking.
Step 3: Build your catalogue
Add your main products or services with photos, short descriptions and prices where possible. Instead of typing the same details again and again, you can share a catalogue item in one tap.
Step 4: Set up quick replies, greeting and away messages
Write quick replies for your most common questions: price list, location, timings, how to order, payment options. Add a friendly greeting for first-time chats and an away message that says when you'll reply. This keeps answers fast and consistent, even on busy days.
Step 5: Get permission (opt-in) the right way
Only send marketing messages to people who have agreed to hear from you on WhatsApp. Meta's guidance on getting opt-in for WhatsApp explains what this means for businesses using the Platform. Practical ways to collect opt-ins:
- A checkbox on your website or checkout: "Send me order updates and offers on WhatsApp".
- A QR code at your counter or on packaging that opens a chat.
- A "Message us on WhatsApp" button on your website, Instagram and Google Business Profile.
- Asking in person, then saving the contact with a note of what they agreed to.
Always make it easy to stop, for example "Reply STOP to unsubscribe", and respect that request immediately.
Step 6: Organise contacts with labels
Use labels such as New enquiry, Price sent, Booked, Paid and Repeat customer. Labels turn a messy chat list into a simple sales pipeline, and they let you send the right message to the right group instead of everyone.
Step 7: Drive people to the chat
A WhatsApp number nobody knows about won't bring sales. Put a chat button on your website, add the link to your Instagram bio and Google Business Profile, print a QR code in-store, and consider click-to-WhatsApp ads on Facebook and Instagram, which open a chat with your business in one tap. Our Meta ads service often uses this ad type for local businesses that sell through conversation.
What to send (and what not to)
The best WhatsApp messages are short, personal and useful. Here are message types that customers usually welcome:
- Instant replies to enquiries with the price, a photo and one clear next step.
- Booking confirmations and reminders the day before an appointment.
- Order updates: confirmed, shipped, out for delivery.
- Follow-ups for people who asked for a price but didn't decide: one polite message, not five.
- Review requests after a completed service or delivery.
- Occasional offers for opted-in customers: a festive sale, new arrivals, a members-only discount.
- Reorder reminders for products people buy regularly.
A simple message template
For a salon, for example: "Hi Priya, thanks for visiting us today! If you're happy with your haircut, would you mind leaving a quick Google review? [link] It really helps a small business like ours. See you next time!" It's personal, short and has one action. See how we help beauty businesses on our salons & spas page.
What not to send
- Messages to numbers you bought, scraped or copied from groups.
- Daily offers to your entire list.
- Long paragraphs with no clear point.
- Forwarded chain messages or anything that looks like spam.
What WhatsApp marketing costs
The WhatsApp Business app is free. You'll only spend on your own time, and on content like product photos.
The Business Platform (API) has usage charges. According to Meta's WhatsApp Business Platform pricing page, since 1 July 2025 businesses are charged per message for template messages, which fall into three categories: marketing, utility and authentication. Rates depend on the template category and the country code of the person receiving the message, and lower utility and authentication rates can apply at higher monthly volumes. The same page notes that:
- Regular (non-template) messages sent inside an open customer service window are free.
- Utility templates sent inside an open customer service window are free.
- When someone messages you from a click-to-WhatsApp ad and you reply within 24 hours, a free entry point window opens for 72 hours, during which messages to that person are free (this applies to users on the Android or iOS app).
Most businesses also pay for the software that connects to the API, such as a team inbox, chatbot tool or CRM. Because rates differ by country and change over time, always check the official pricing page for your market before planning a big campaign.
Common mistakes to avoid
- Broadcasting to everyone, all the time. Segment by label and interest, and keep marketing messages occasional.
- No opt-in. It's against WhatsApp's rules and it damages trust.
- Slow replies. A quick, helpful answer often decides who gets the sale.
- Using a personal number. You lose business tools, and the chats leave when the person does.
- No follow-up system. Leads who asked for a price and never heard back are money left on the table. A simple CRM can remind your team automatically.
- Not measuring. Track enquiries per week, how many became sales and where each chat came from.
FAQs
Is WhatsApp marketing legal?
Yes, when you follow WhatsApp's policies and local privacy laws. The key is permission: message people who contacted you or agreed to receive messages, and stop when they ask.
Can I send bulk messages from the WhatsApp Business app?
The app has broadcast features for smaller lists, but it isn't built for large-scale sending. For bigger opted-in lists and automation, the Business Platform (API) is the right tool. Avoid unofficial "bulk sender" software, as it can get your number banned.
Do I need a website for WhatsApp marketing?
No. You can start with the app, a catalogue and a link in your Instagram bio and Google Business Profile. A website helps with trust and gives you another place to collect opt-ins.
How often should I send promotional messages?
There's no fixed number. Send only when you have something genuinely useful, and watch replies, blocks and opt-outs. If people start leaving, slow down.
Can WhatsApp connect to my CRM or online store?
Yes, through the Business Platform (API). Orders, bookings and enquiries can trigger automatic messages, and every chat can be saved as a lead.
Want WhatsApp to bring you more orders without spamming anyone? Message us and we'll suggest a simple setup that fits your business, for free.
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