App or API: which one you need

WhatsApp Business appWhatsApp Business Platform (API)
CostFreeCharged per delivered message, by category and country
Best forOne person or a small team replying by handAutomated messages and many agents on one number
SetupDownload and register a numberMeta business account, plus Meta's Cloud API or a solution provider
AutomationGreeting, away and quick-reply messagesOrder confirmations, shipping updates, chatbots, store integration
Starting a chatManual messages and broadcast listsPre-approved message templates to opted-in customers

Start with the app. Move to the API when replying by hand becomes the bottleneck, usually somewhere past a few dozen orders a day.

Step 1: Set up your business profile

  1. Install WhatsApp Business (a separate app from WhatsApp) and register a number you will keep for the business.
  2. Fill in the profile: business name, category, description, address, hours, email and website.
  3. Use your logo as the profile photo. Buyers decide whether to trust you in the first few seconds.
  4. Link the number to your Instagram and Facebook pages so the WhatsApp button appears there.

Step 2: Build your catalog

The catalog is a mini storefront inside your profile. Each item has photos, a name, price, description and an optional link. Customers can browse it, add items to a cart, and send the cart to you as a message.

  • Use clear photos on a plain background, with the first image showing the whole product.
  • Put size, material and delivery time in the description so you answer fewer repeat questions.
  • Group items into collections once you have more than about ten products. Full walkthrough: how to create a WhatsApp Business catalog.
  • Check WhatsApp's commerce policy before listing. Some categories, such as alcohol, tobacco and medicines, are not allowed.

Step 3: Bring buyers into the chat

A click-to-chat link opens a conversation with you, with a message already typed:

https://wa.me/91XXXXXXXXXX?text=Hi%2C%20I%20want%20to%20order

Replace the Xs with your ten-digit number. Then put the link everywhere a buyer might be:

  • Instagram bio, story stickers and post captions.
  • A WhatsApp button on your website and product pages.
  • A QR code on packaging, bills and your shop counter.
  • Click-to-WhatsApp ads on Instagram and Facebook, which open a chat instead of a web page.

Step 4: Take the order

Save these as quick replies so every order follows the same script:

  1. Confirm the items, size or variant, and quantity.
  2. Ask for full name, address with landmark, PIN code and an alternate phone number.
  3. State the total including shipping, and the delivery estimate.
  4. Offer prepaid first, then Cash on Delivery.
  5. Send a written order summary and ask the buyer to reply "Confirm".

Use labels (New order, Payment pending, Paid, Shipped) to keep track of where each chat stands.

Step 5: Collect payment

  • UPI. Share your UPI ID or QR code, or a payment link from your gateway. Ask for a screenshot and check that the money has actually arrived before you ship.
  • Payment links. Links from a payment gateway mark the order paid automatically and are safer than screenshots at volume.
  • Cash on Delivery. Expect more returns than on prepaid orders. Always get a written confirmation of the address before dispatch. See how to reduce RTO on COD orders.
A small discount for paying by UPI moves many buyers away from COD. Work out what a returned parcel costs you with the COD RTO calculator and set the discount below that.

Step 6: How to send products sold on WhatsApp

Once an order is confirmed and paid (or confirmed as COD), you have three ways to get it to the buyer:

OptionHow it worksBest for
Shipping aggregatorOne account books pickups with many courier companies. You compare rates, print labels and get COD remitted to your bank.Most sellers shipping across India, including COD orders
India PostBook Speed Post or a parcel at the post office, or schedule a pickup for regular volume.Small towns and PIN codes private couriers do not serve
Local deliveryYour own staff or a same-day delivery app takes the parcel across the city.Food, flowers and same-day orders in your city

Packing and dispatch checklist

  1. Weigh the packed parcel and measure the box. Couriers charge on whichever is higher: actual weight or volumetric weight.
  2. Copy the address exactly as the buyer confirmed it in chat, with PIN code, landmark and phone number.
  3. Put the invoice inside the parcel and the shipping label on the outside.
  4. Seal it so tampering shows, and take a photo or short video of the packed parcel in case of a dispute.
  5. Mark the chat label as Shipped and record the tracking number against the order.

Follow up in the same chat

  • Send the tracking link as soon as the parcel is picked up.
  • Message on the day of delivery, with the amount to keep ready for COD.
  • Ask for a review or photo a few days after delivery.
  • Issue a GST invoice if you are registered, and send it as a PDF in the chat.

When to move to the WhatsApp Business API

The app stops scaling when:

  • Several people need to answer on the same number at once.
  • You want order confirmations and shipping updates sent automatically.
  • You need WhatsApp connected to your store, inventory and courier.

How API pricing works

Meta charges per delivered message, and the rate depends on the message category and the recipient's country. There are four categories:

  • Marketing: offers, product suggestions, cart reminders.
  • Utility: order confirmations, delivery updates, alerts.
  • Authentication: one-time passwords.
  • Service: replies to a customer who messaged you. These are free within the 24-hour window that opens when the customer writes to you.

When a customer reaches you through a click-to-WhatsApp ad, a 72-hour window opens in which your messages are not charged. Rates change, so check Meta's pricing page for current India figures. Solution providers usually add their own platform fee on top.

Rules that apply on the API

  • You need the customer's opt-in before sending business-initiated messages.
  • Messages that start a conversation must use templates approved by Meta.
  • Too many blocks and reports lower your quality rating and can limit how many messages you may send.

Common mistakes

  • Using a personal number. You will want to hand the phone to staff one day.
  • Adding people to groups or broadcasts without consent. It gets you reported and blocked.
  • Shipping on a payment screenshot alone. Screenshots are easy to fake.
  • Keeping orders only in chat. Record every order in a sheet or store system, so stock and accounts stay correct.
  • Replying slowly. Most WhatsApp buyers are comparing two or three sellers at the same time.

Doing this with ARSAVO

ARSAVO connects a web storefront, WhatsApp ordering and inventory in one place. COD orders are confirmed on WhatsApp automatically, UPI is the default checkout, and GST invoices are generated for each order, with 0% commission on sales. ARSAVO opens in private beta in January 2027 for 15 founding merchants.

Frequently asked questions

How do I send products I sold on WhatsApp?

Use a shipping aggregator to book a courier pickup from your address, or India Post for PIN codes couriers do not reach. Confirm the address in chat first, pack and label the parcel, then send the buyer the tracking link on WhatsApp. For orders in your own city, local delivery is usually faster and cheaper.

Can I start an online business on WhatsApp alone?

Yes. Many Indian sellers start with only the free WhatsApp Business app, a catalog, a UPI ID and a courier account. Add a website once you want orders to come in without a manual reply and want buyers to find you on Google.

Is WhatsApp Business free?

The WhatsApp Business app is free. The WhatsApp Business Platform (API) is charged per delivered message, except service replies inside the 24-hour customer service window.

Can I use WhatsApp and WhatsApp Business on the same phone?

Yes, with two different phone numbers. One number cannot be registered on both apps at the same time.

Do I need GST registration to sell on WhatsApp?

WhatsApp does not ask for it. Whether you must register depends on GST law, including your turnover and whether you sell across state lines. Confirm with a chartered accountant.

Do I need a website as well?

Not to start. A website helps once you want buyers to order without waiting for a reply, to be found on Google, and to run ads that track sales.

Apply for a founding merchant spot

Storefront, WhatsApp ordering and COD verification in one place. 15 spots in Batch 01.

Claim Spot →