Your customers already open WhatsApp dozens of times a day. A festival offer sent there gets read in minutes. The same offer on a pamphlet or SMS usually gets ignored. That is why more shops, supermarkets, clinics and distributors across Tamil Nadu now use WhatsApp to bring customers back.
The catch: sending hundreds of messages from a normal WhatsApp or WhatsApp Business app gets your number blocked fast. Here is how to do it the right way.
1. Use the WhatsApp Business API, not the phone app
The free WhatsApp Business app is fine for chatting with a few customers. For bulk messages you need the WhatsApp Business API, the official platform from Meta. With the API you can:
- Send messages to thousands of customers without your number being banned
- Let several staff reply from the same number
- Add a chatbot that answers common questions automatically
- Connect WhatsApp to your billing software, website or CRM
2. Get message templates approved
Every promotional or reminder message you start has to use a template approved by Meta. Keep templates short and clear, and fill in the customer’s name or bill amount where you need it. Examples that usually get approved:
- “Hi {{1}}, our Diwali sale is live! 20% off on all items till Sunday. Reply STOP to opt out.”
- “Hi {{1}}, your appointment with Dr. {{2}} is tomorrow at {{3}}.”
- “Hi {{1}}, payment of ₹{{2}} for invoice {{3}} is due on {{4}}.”
3. Only message people who agreed
Collect WhatsApp numbers at the billing counter, through your website or with a QR code at the shop, and tell customers they will get offers on WhatsApp. If people keep blocking or reporting you, Meta lowers your number’s quality rating and limits how many messages you can send.
4. Group your customers with tags
Don’t send the same message to everyone. Tag contacts by area, by what they buy or by how often they visit. A supermarket in Tenkasi might send a vegetable offer to regular customers and a “we miss you” coupon to people who haven’t visited in 60 days.
5. Let a chatbot handle the common questions
“What time do you open?”, “Is this in stock?”, “Send me the price list.” A simple WhatsApp chatbot answers these straight away, even at night, and passes the chat to your staff when a person is needed.
6. Ideas by business type
- Supermarkets & retail: weekly offers, new stock alerts, festival sales
- Hospitals & clinics: appointment reminders, lab reports, follow-up visits
- Distributors: order confirmations, payment reminders, price updates
- Schools & coaching centres: fee reminders, exam schedules, holiday notices
- Restaurants: menu, table bookings, feedback after the meal
7. Check your results
Look at how many messages were delivered, read and replied to for each campaign. Keep sending what works and drop what doesn’t. A good campaign gets most of its replies within the first few hours.
A quick checklist
- Official WhatsApp Business API, not the phone app
- Meta-approved templates
- Customers who opted in
- Contacts grouped with tags
- A chatbot for common questions
- A shared inbox for your team
- Delivery and read reports
WestChat is our WhatsApp Business API panel. It covers everything on this list: bulk campaigns, templates, a no-code chatbot and a team inbox. It also connects with our GST billing software, so invoices can go to customers on WhatsApp automatically. Book a free demo, or log in to WestChat if you already have an account.
