In India, a good share of business conversations happen on WhatsApp. A buyer who has left your email unanswered for a week may reply to a two-line WhatsApp message within minutes. That is why WhatsApp business outreach is on nearly every Indian sales team’s list, and why so many teams start in a way that gets their number restricted.
The channel runs on Meta’s rules: opt-in before you message, approved templates outside a 24-hour window, per-message pricing, and a quality system that reacts to blocks and reports. Within those rules, WhatsApp works best as a follow-up step inside a wider outreach sequence, with people who have agreed to hear from you.
WhatsApp Business App vs the Business Platform (API)#
Much of the confusion comes from WhatsApp offering businesses two separate products.
| WhatsApp Business app | WhatsApp Business Platform | |
|---|---|---|
| What it is | An app on your phone | An API your software connects to |
| Typical use | A shop or small team answering customers by hand | High‑volume messaging, connected to your other systems |
| Built‑in tools | Business profile, catalog, greeting and away messages, quick replies, labels | Template messages, webhooks, integrations with a CRM or outreach tool |
| How you get it | Download and register a number | Through Meta directly or a Meta partner |
Anything you would call outreach runs on the Business Platform, either through your own developers or through a provider built on it. A vendor selling “bulk WhatsApp” with no mention of the Business Platform, templates or opt-in is describing something that breaks WhatsApp’s terms. WhatsApp can restrict or ban numbers used that way.
Where WhatsApp Fits in B2B Outreach#
WhatsApp sits next to family groups and the school parents’ chat. Tolerance for an unexpected sales message is lower than in an inbox, and an unwelcome message gets blocked where an email would merely be deleted.
Four situations suit it in WhatsApp B2B outreach:
- After someone has engaged with you: a reply to your email, an accepted LinkedIn connection, an inquiry, or a form where they asked for WhatsApp updates
- Sending a document someone asked for, or a short note after a call
- Meeting confirmations and reschedules, where a WhatsApp message is most welcome
- Answering someone who messaged your business first. They opened the door, and a quick, useful answer matters
Used like this, WhatsApp is one step in a multichannel outreach sequence. Cold messages don’t belong on it.
Opt-In: The Rule Everything Rests On#
Meta’s opt-in guidance requires businesses to obtain permission before messaging people on WhatsApp. The opt-in doesn’t have to mention WhatsApp specifically, as long as it follows local law, and it must clearly name the business the person is agreeing to hear from. It can be collected on a website, by SMS, over the phone or in person.
WhatsApp’s Business Messaging Policy adds that you may contact people only if they have given you their number, and that you must respect any request, on or off WhatsApp, to stop or opt out.
For outreach, that settles it. A phone number in a lead database is not permission. A number someone gave you with consent to be contacted is, and so is a conversation they started.
India’s Digital Personal Data Protection Act, 2023, with its rules notified in November 2025 and compliance phased in over 18 months, adds its own consent obligations. Check your approach with counsel; no article, this one included, can stand in for that.
WhatsApp Template Messages and the 24-hour Window#
A message from someone to your business opens a 24-hour customer service window. Inside it you can reply freely, as in any conversation. Outside it, Meta allows only template messages: pre-written messages, with placeholders for details such as a name or a date, that are reviewed before use.
Meta’s template guidelines add three practical points.
- Each template belongs to a category (marketing, utility or authentication), and the category sets the price.
- Templates are reviewed automatically when created or edited, and Meta says review can take up to 24 hours. Submit changes well before a campaign starts.
- Only the placeholders change from person to person. The rest of the text is fixed, which limits how personal a template can be on its own.
The window favors messages that get answered. A template that starts a conversation opens the window, and the useful follow-up happens inside it. If you automate replies there, WhatsApp’s policy also requires a clear and prompt path to a person.
How WhatsApp Business Platform Pricing Works Now#
Meta changed its pricing model on July 1, 2025. Its pricing documentation now describes a charge per message, replacing the earlier charge per conversation:
| Message | Charged? |
|---|---|
| A template message, once delivered | Yes. The rate depends on the template category and the recipient’s country code |
| A non‑template message, which can only be sent inside an open customer service window | No. Replying to someone who messaged you costs nothing |
| A utility template sent inside an open window | No |
| A marketing template sent inside an open window | Yes, even inside the window |
| Messages after someone writes to you from a Click‑to‑WhatsApp ad or a Facebook Page call‑to‑action button | Free for 72 hours, provided you reply within 24 hours |
India has its own rate card in rupees, and Meta introduced rupee billing for eligible Indian businesses from January 1, 2026. Rates change during the year. Look up Meta’s current rate card before you budget, since a figure quoted in a blog may already be out of date.
Quality Rating and Messaging Limits#
Meta caps how many different people you can message outside a customer service window in a rolling 24-hour period. A newly created business portfolio starts at 250, and the limit can rise as you verify your business and keep message quality high. The limit is set for the whole business portfolio and shared by all its numbers.
Quality comes from how people react. Recipients can block or report a business, and Meta says it will rate-limit businesses whose quality stays low. Messaging people who never agreed to hear from you is the fastest way to get there.
The shared limit is what makes a mistake expensive. One careless campaign from the sales number can constrain the number your customers use for support.
Setting Up WhatsApp for Outreach, Step by Step#
Put these in place before the first message, in this order:
- Verify your business with Meta. Verification is one of the routes Meta lists for raising your messaging limit, and it shows recipients who they are talking to.
- Add a consent line to every form and inquiry page that collects contact details. It should name your business and say people may hear from you on WhatsApp.
- Prepare a small set of templates, such as a meeting confirmation, a reschedule and a short follow-up, and submit them well before you need them.
- Give every reply an owner and a response time, evenings included if your buyers write then.
- Connect WhatsApp to the same lead record as email and LinkedIn. A separate inbox on one person’s phone is where conversations get lost.
Then measure. Delivered, read, replied and meeting booked are four different numbers, and only the last two show whether WhatsApp is helping. Compare them with how the same people responded on email before deciding how much weight the channel gets.
Writing a WhatsApp Follow-Up That Earns a Reply#
Say Rohit Mehta, Head of Operations at Sterling Castings, replied to your email asking for a case study and shared his WhatsApp number for quick questions. The follow-up should be short, specific and easy to answer:
“Hi Rohit, following up on your email. Attached is the machining case study you asked for. Would Thursday or Friday suit a 20-minute call to go through it?”
It points back to his request, delivers what he asked for and offers two specific days. Rohit can answer with a single word from the shop floor.
The mistakes that cost teams their number, or the lead:
- Messaging numbers from a purchased or scraped list
- Sending long, promotional text that reads like an email newsletter
- Automating sends without anyone ready to answer the replies
- Running WhatsApp in a separate tool where nobody else can see what was said
- Measuring delivery instead of replies and meetings
For a team, the last two do the most damage. A WhatsApp conversation belongs on the same record as the emails and calls, where the next person to pick up the account can read it. When a lead replies on WhatsApp, every other pending step should stop. Our guide to where outreach leads go cold covers why those handoffs matter.
WhatsApp isn’t a Rhenyx channel yet. It’s what we’re building next: a step in the same sequence as email and LinkedIn, where opt-in rules allow. Today Rhenyx runs email and LinkedIn as one sequence per lead, a reply on either channel stops every remaining step for that person, and the meeting reaches your CRM with the whole conversation attached. See how follow-ups run across channels. Rhenyx is the outreach platform for B2B teams: you approve the plan, and it runs outbound from your website to a booked meeting. See How the Platform Works