Here’s a setup that’s common at small businesses: one Android phone sits on the front desk with the WhatsApp Business app on it. Customers message that number. Whoever is nearby answers. On busy days the phone travels from desk to desk, and on weekends it goes home with the owner.
It works until it doesn’t. A lead who asked for a quote on Friday afternoon gets an answer on Monday. Two people reply to the same customer from the same phone, a few minutes apart, with different prices. Someone deletes a chat to “clean up.” Nobody can tell you how many WhatsApp leads came in last month or which ones turned into jobs.
This article is about moving from “one phone” to “a team that sells on WhatsApp,” without losing what customers like about the channel: it’s fast, personal, and on the app they already use.
Two ways businesses use WhatsApp
WhatsApp offers businesses two main paths. You don’t need to know every technical detail to choose, but you do need to know which one you’re on. Our WhatsApp business guide covers the setup, verification, and costs in depth; here’s the high-level picture.
The WhatsApp Business app
A free app for a phone, built for a small business owner. It adds a business profile, catalog, quick replies, labels, and greeting or away messages. It’s tied to one phone number, and while it supports a limited number of linked devices, it’s designed around a person, not a team process.
Good fit: a solo operator, or a very small team where one person handles nearly all chats.
The WhatsApp Business Platform
Meta’s platform for businesses that need to connect WhatsApp to their own systems, usually accessed through a provider or a software tool built on it. It’s designed for multiple agents, routing, and integration with a CRM. Messages that the business starts outside an open conversation must use pre-approved message templates, and Meta charges for certain conversations according to its published pricing, which changes over time.
Good fit: a team of three or more that wants shared access, ownership, reporting, and a record of conversations that doesn’t depend on one device.
A practical note: a phone number is generally registered to one of these at a time. If you plan to move an existing Business app number to the Platform, plan the switch carefully with your provider so customers keep reaching you on the same number.
Shared numbers: one number, many people
The core shift is from “my WhatsApp” to “our WhatsApp.” Customers message one business number. Behind it, several people can read and reply, each conversation has an owner, and the history stays with the business.
That has a few consequences worth deciding up front:
- Which number is public? Put the business number on your website, Google profile, truck wraps, and invoices. Stop handing out personal numbers for business. A WhatsApp click-to-chat link on your site with a prefilled message (“Hi, I’d like a quote for…”) gives you a cleaner first message.
- Who signs messages? Customers like knowing who they’re talking to. A simple convention works: first name at the end of the first reply in a conversation (“— Priya, Westside Remodeling”).
- What happens to existing personal threads? Don’t try to migrate history in one weekend. Ask reps to move active customers over gradually: “We’re moving to our main business line so the whole team can help you. Please save this number.” Expect the transition to take a few weeks, not a day.
The shared business number use case describes how this looks once it’s set up.
Templates and the 24-hour customer service window
This is the WhatsApp rule that surprises most teams moving to the Platform.
When a customer messages you, a 24-hour customer service window opens. Within that window, you can reply with normal free-form messages. Each new customer message resets the window. Once 24 hours pass without a customer message, you can no longer send free-form messages; you can only start a conversation with an approved template message. (See customer service window for the short version.)
What this means in daily work:
Reply inside the window whenever you can. A lead who messages at 3 PM and gets a useful answer at 4 PM is easy. The same lead who gets an answer at 5 PM the next day requires a template to reopen the conversation.
Prepare a small set of templates in advance. You don’t need dozens. Most small sales teams need four or five, for example:
Hi {{1}}, this is {{2}} from Westside Remodeling following up on your bathroom project. Is now still a good time to talk about next steps?
Hi {{1}}, your estimate visit is confirmed for {{2}} at {{3}}. Reply here if you need to change it.
Hi {{1}}, we sent your quote on {{2}}. Happy to answer any questions — just reply to this message.
Templates go through Meta’s review and are assigned a category (such as marketing or utility), which affects how they’re handled and charged. Write them plainly, with a clear reason for the message, and avoid anything that reads like a mass promotion when it’s really a follow-up.
Consent still matters. Message customers who have asked to hear from you or who started the conversation. WhatsApp has its own opt-in expectations, and US rules about business messaging can apply too. Check with your provider and, for anything beyond routine replies, with counsel; rules change.
For ready-to-adapt wording, see our WhatsApp follow-up templates.
Ownership: the rule that prevents most problems
The most useful rule you can adopt is short: every conversation has exactly one owner.
The owner is responsible for replying, for the next follow-up, and for updating the deal. Others can read, add internal notes, and cover when needed, but they don’t reply unless the thread is handed to them.
A simple way to start:
- New conversations go to whoever is “on new leads” today, or rotate through the sales team.
- Existing customers go back to the person who last worked with them.
- Handoffs happen with a note: “Passing to Marcus — she wants a site visit next week, budget around what we discussed, prefers mornings.”
- Out of office means reassigning your open conversations before you leave, not after.
We go deeper into statuses, handoffs, and a sample written policy in shared inbox rules that stop double replies.
Recording deals without copying and pasting
The other half of “WhatsApp CRM” is making sure the conversation turns into a record you can act on. On a small team, this is usually where things fall apart: the chat has the details, and the spreadsheet is three days behind.
Decide on the minimum you need to capture, and capture it from the conversation as it happens:
| What to record | When | Example |
|---|---|---|
| Contact name and number | First reply | Ana Ruiz, +1 312 555 0147 |
| What they want | First useful exchange | Bathroom remodel, single bath, tub-to-shower |
| Source | First reply | Google profile click-to-chat |
| Stage | Every time it changes | New → Qualified → Visit booked → Quote sent |
| Next step and date | End of every conversation | Site visit Tue 10 AM |
| Owner | Always | Priya |
The test of a good setup: if the owner is out sick tomorrow, could a colleague open the thread, read the last few messages and the notes, and know exactly what to do next? If the answer is “they’d have to call Priya,” the record is incomplete.
Two habits help:
- End every conversation with a next step, and write it down where the team can see it. “I’ll send the quote by Thursday” becomes a reminder for Thursday.
- Update the stage in the moment, not in a weekly catch-up. It takes seconds when you’ve just read the message and minutes when you’re reconstructing it from memory.
A starter checklist
- Decide whether your team needs the Business app or the Business Platform.
- Publish one business WhatsApp number everywhere customers see you.
- Write four or five templates and submit them for approval.
- Agree on a reply target that keeps most conversations inside the 24-hour window.
- Adopt “one owner per conversation” and a handoff note format.
- Define the fields and stages you’ll record, and keep the list short.
- Set a date to stop using personal numbers for new business conversations.
If you’re also texting customers over SMS, read SMS vs. WhatsApp for business to decide which channel to lead with for which customers.
Where inChat fits
inChat is a conversation-first CRM in development for small US teams. WhatsApp, through the WhatsApp Business Platform, is one of its planned launch channels alongside SMS, with conversation ownership, response timers, and deals linked to each thread. It’s in early access now; you can see the planned WhatsApp channel or request early access.