Organisations that need team access, scheduled templates and system integrations on one WhatsApp number use the WhatsApp Business API, Meta's sanctioned route for that. What a Chennai business has to prepare for the WhatsApp Business API, how the steps run from verification to the first template, and the cases where staying on the free Business app makes more sense.
The WhatsApp Business API is how Chennai companies message customers at scale on WhatsApp officially, after Meta verifies the business and the number is registered on its Cloud API.
WappBlaster registers and tests Chennai accounts in a Google Meet session and supplies the dashboard, inbox and chatbot for ₹7999 ($200) a year.
Dealers send a confirmation as soon as a workshop slot is fixed.
Clinics remind patients before their consultation.
Online silk orders trigger dispatch messages.
Meta approves Tamil wording just as it does English.
WappBlaster handles the WhatsApp Business API application for Chennai businesses in four stages. Meta first needs a Business portfolio, new or existing, and verifies it against one document carrying the registered name: a shop licence, an Udyam certificate or a GST registration. A phone number is then registered on Meta's Cloud API; you can use a new SIM, or move your current number after deleting its account on the phone's WhatsApp app. Third comes Meta's approval of the display name your customers will see. Last, the first templates are submitted, often in both Tamil and English. Two to five working days is typical, and most of that time is Meta reviewing documents. Because the API on its own is only a technical connection, WappBlaster provides the working tools on top: a campaign screen, a shared inbox, a chatbot builder, delivery reports, and a REST API with webhooks. The platform fee is ₹7999 ($200) per year; Meta's message charges are separate and at cost. All steps happen remotely, from Bikaner.
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What you need ready
Prepare these and Meta's review is the only wait.
A shop and establishment licence, an Udyam certificate or a GST registration that shows the business name exactly. A hospital trust or a partnership firm should use the name on its registration, not a department name.
Meta checks that the business is real and public. A simple website, or a public listing whose name, address and phone match your documents, is normally enough for a clinic or a showroom.
The number must receive an OTP by SMS or call, and must not be active on the WhatsApp app. If it is, delete the app account first and save any chats you need to keep.
Use your trading name, such as the showroom or hospital name customers know. Draft one utility message (an appointment or service reminder) and one marketing message; WappBlaster polishes them before submission.
Tamil Nadu's capital had a population of 6,748,026 at the 2011 Census of India, and many of its dealerships, hospitals and showrooms now handle more WhatsApp chats than one phone can manage. The API keeps the experience familiar for customers, who still receive messages in Tamil or English, both approved languages for Meta templates. WappBlaster runs the application without visiting. From Bikaner, Rajasthan, the team works through verification, number registration and templates with you over AnyDesk or a video call.
A dealership typically moves to the API when service reminders, sales enquiries and parts queries all arrive on one overworked phone. The app cannot schedule a reminder batch or let five advisors answer from one number. On the API, reminders are scheduled, enquiries from the website arrive through webhooks, and every advisor answers from a shared inbox with their own login, while the dealer principal can see every conversation.
Hospitals need the API when appointment reminders must come from the hospital's own system rather than a receptionist's phone. The REST API lets the booking software send a reminder template as soon as an appointment is made, and the patient's reply returns to the inbox. The free app has no such connection, and it keeps patient chats on a single handset that anyone could pick up.
A silk retailer often moves to the API when the shop's phone is full of buyers asking about prices and stock, and the owner wants to send the new collection to everyone who opted in. The app's broadcast lists reach only people who saved the number; the API sends approved templates to the whole opted-in list, with photos and a button.
The same whatsapp business api setup is also written up for Bangalore and Hyderabad.
National details: WhatsApp Business API software.
| Feature | WhatsApp Business app (free) | WhatsApp Business API with WappBlaster |
|---|---|---|
| Users | One phone, plus linked devices | Whole team on one number |
| Bulk sending | Broadcast lists, saved contacts only | Template campaigns to opted-in lists |
| Scheduling and automation | Greeting and away messages | Scheduled sends, drips, chatbot |
| Verified business name | Not shown in chats | Display name approved by Meta |
| CRM and website connection | None | REST API, webhooks, CRM connectors |
| Cost | Free | Platform fee plus Meta per-message charges |
Yes, once that number has been taken off the WhatsApp app. It is then registered on Meta's Cloud API, and patients see the same number with the hospital's verified display name. Older chats on the phone do not transfer, so export what you need before the switch.
Link to this answerAny registered business can qualify, including a single-owner shop with a shop licence or Udyam certificate. Meta's verification looks at whether the documents, the public listing and the display name match, not at the size of the business. Every new number starts with a small sending limit that grows with use.
Link to this answerThe app runs on one phone plus linked devices and suits one person replying to saved contacts. The API serves a whole team on one number, sends approved templates to opted-in lists, schedules campaigns and connects to your systems. It has no screen of its own, so a provider such as WappBlaster supplies one.
Link to this answerTwo separate charges apply. To WappBlaster, ₹7999 ($200) for the year. To Meta, a per-delivered-message charge that varies with category (Meta's three are authentication, marketing and utility) and with the recipient's country, the model Meta adopted on 1 July 2025; Meta has also said that replies inside the 24-hour service window are billed from 1 October 2026.
Link to this answerYes. Meta lets businesses use its Cloud API directly, but you then need developers to build the screens for sending, replying and reporting. WappBlaster's dashboard provides those tools, so non-technical staff at a showroom or clinic can use the API from the first day.
Link to this answerYes. The booking software can send a reminder template through the REST API the moment an appointment is made, and the patient's reply returns to the inbox instead of sitting on one receptionist's handset.
Link to this answerWhen service reminders, sales enquiries and parts queries all crowd one phone. The API schedules reminder batches, brings website enquiries in by webhook and lets five advisors answer from one number while the dealer principal sees everything.
Link to this answerThe name on its registration, not a department name. The display name can then be the hospital name patients know, provided it matches the documents and public listing.
Link to this answerYes. The app's broadcast lists reach only people who saved the number, while the API sends approved templates with photos and a button to the whole opted-in list.
Link to this answerIt must be able to receive the verification code by SMS or call, and it cannot be active on the WhatsApp app at the time.
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