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Guide · 7 min read

Do you need the WhatsApp Business API to sell to retailers?

, founder of Mira · 3 September 2026

In brief

No, not for your first shelf. Meta's policy lets you message people who gave you their number and agreed to hear from you, and nobody else. A boutique that never heard of you did neither. I would not pay for a platform until a hundred stores already carry you. Until then it is one message at a time from your own phone.

What these platforms are for

Wati, Interakt and AiSensy do not own WhatsApp. They resell access to Meta's WhatsApp Business Platform and put a dashboard on top of it: broadcasts to a list, a shared inbox, a catalogue, chatbot flows.

Meta's own messaging policy is the line to read before you pay anybody. You may only contact people on WhatsApp, it says, if "(a) they have given you their mobile phone number; and (b) you have received opt-in permission from the recipient".

So I count the list before I look at a plan. Thirty numbers off your own bills and a platform has work to do.

The gift store across the city gave you neither.

What Meta charges, in plain words

Since 1 July 2025 Meta charges per message, on delivery, rather than per conversation. Four categories, and the one you would pitch with costs the most.

  • Marketing. Anything promotional. The India list rate is ₹0.8631 a message.
  • Utility. Triggered by something the customer did, like a dispatch update. ₹0.1150.
  • Authentication. One-time passwords. ₹0.1150.
  • Service. Your reply inside the 24 hours after somebody writes to you. Free.

Resellers add their margin on top. Interakt's pricing page lists ₹0.970 for a marketing message to an Indian number and AiSensy's lists ₹1.09, against Meta's ₹0.8631. Interakt's Growth and Advanced tiers are ₹2,799 and ₹3,799 a month before tax, and Wati's plans carry the line that additional charges apply for messages.

Three hundred marketing messages at ₹1.09 come to about ₹330. No first counter is held up by ₹330, so I would not haggle this on the rate. The opt-in rule above is the real limit.

Founders complain about the bill, and about cancelling. Two of them, from Wati's Capterra page.

  • "Monthly service fee is on the higher side."Angad R., CEO. Capterra, 15 April 2025
  • "support becomes unresponsive once you request cancellation"Nicholas S., CEO. Capterra, 11 November 2025

Why a cold first message reads as spam

Three things go wrong at once, and none of them is your writing.

You do not get to write it. Outside that 24 hour window the only thing you may send is a template submitted in advance. Meta's documentation says templates "must have a status of APPROVED before they can be sent". A template built to fit three hundred stores cannot mention the bake counter you stood at on Thursday, or what ₹75 a unit does to the owner's margin on MRP, their cut against the printed price.

The block button is right there. Meta's policy says people can block or report a business, and that its systems limit how much a business can send when quality stays low for a sustained period. The number carrying that damage is yours.

The reply goes to a dashboard. The store writes back to a system and you are not in the thread.

On 5 August 2026, on a Khan Market beat, the route you walk in a set order on a set day, I judged ten drafts and approved nine with the editor never opened. Approving a draft is not a café answering it, and I would still take those nine over a template.

When a platform is the right buy

Buy one the month a hundred stores already stock you. The list is real by then, and these tools were built for that work.

  • Reorder nudges and dispatch updates, utility messages at ₹0.1150 and free inside the service window.
  • One inbox somebody else can answer while you are in the kitchen.
  • A catalogue for people who already know the brand.

I would pay a few thousand a month for that, and not a month earlier, because the subscription starts the day you sign and the stockists do not.

Four routes to a first shelf

RouteWhat you payWhat it is good atWhere it breaks
Broadcast platform Interakt ₹2,799 to ₹3,799 a month before tax, plus about ₹0.97 to ₹1.09 a marketing message Broadcasts, a shared inbox, chatbot flows and a catalogue, for numbers that opted in It finds nobody, and to a café that never opted in you can only send a template
By hand, your own phone Nothing but your evenings Their name, one thing true of that store, and the margin on MRP in rupees Ten a night is a good night, and the reading eats it, not the typing
A rep on the ground ₹12,000 to ₹22,000 a month for a fresher, more with experience Somebody in the store, stock in the boot, the counter faced and the order taken One person, one city, one beat. It stops the week they leave
An AI sales rep, Mira A monthly pilot Finding the stores worth writing to, and the first message in your voice from your own number No stock in the boot, no collections, nobody walks in. You judge the drafts

Scroll the table sideways

With one city and no rep, I would work one beat by hand until it reorders before buying anything. The comparison guide costs the salaries properly, and six messages worth copying sit in WhatsApp messages that pitch a café.

Three things founders ask

Can I just use the WhatsApp Business app?

That is what it is for. Meta describes it as built with the small business owner in mind. One thread at a time, from a number the store can ring back.

I already pay for a platform. Have I wasted it?

No. Keep it for the stores that said yes: reorders, dispatch, the inbox. The part before the yes was never its job.

Will cold messaging get my number banned?

Meta acts on blocks and reports, so this turns on who you write to and how. Their published business number, one at a time, no link in the first one, and stop on any no. That is slow, and slow is why I still work this way.

Sources