The distinction that matters

Sales on WhatsApp works when the customer starts it.

Somebody clicks a “message us” button, asks a question, and a salesperson replies. That is a conversation, and it converts well because the customer chose to have it.

Sales on WhatsApp fails when you start it. Unsolicited promotional messages get reported, and reports cost you the channel.

Everything below follows from that distinction.

Getting customers to message you

Four routes, all customer-initiated.

A click-to-chat link. A URL that opens WhatsApp with your number and optionally a pre-filled message. Put it on your website, in email signatures, on invoices.

A WhatsApp button on your site. More visible than a link. Works well on mobile, where most people are.

A QR code. On packaging, in a shop, on printed material. Scan and the chat opens.

In your ads. Some ad platforms support click-to-message directly.

The pre-filled message is worth using. “I’d like to ask about the XR-200” tells your team what the enquiry is about before they read anything.

Why it converts

Three reasons, and they are worth understanding because they shape how you should use it.

Speed. Messages get read quickly. A reply within minutes is normal on this channel, and response speed is one of the strongest predictors of conversion in almost any market.

Low friction. Asking a question by message is easier than filling a form or making a call. People who would not have contacted you do.

It is a conversation. Objections come out. Questions get answered. That is a better sales environment than a one-way form submission.

Where the leads should go

Into your CRM, not into somebody’s phone.

A WhatsApp enquiry sitting in an app on one person’s device is not a lead. It is invisible to everyone else, it disappears when they are on leave, and nothing gets measured.

A proper setup:

• The conversation creates a lead or opportunity
• The source is recorded as WhatsApp
• The transcript is attached
• Somebody is assigned and notified
• A next activity is scheduled

That last one matters. An enquiry with no scheduled follow-up is one nobody is working on.

During the conversation

The service window is open once they message you, so you can reply freely for a period — usually 24 hours. Use it.

Four things that work:

Reply fast. This is the whole advantage. A reply in ten minutes beats one in four hours by a large margin.

Keep it short. This is a messaging app. Long paragraphs do not fit the medium.

Send what helps. Product images, a specification document, a price list, a quotation PDF. WhatsApp handles documents well.

Move to a call when it makes sense. Complex or high-value discussions need a voice. Use the message to arrange it.

After the window closes

Here is the constraint.

Once the window closes, you cannot just follow up. You need an approved template.

Which means:

Plan your follow-up templates in advance. A quotation reminder, a “still interested?” check.

Keep them useful, not pushy. “Your quotation is ready to view here” works. “Don’t miss out!” reads as spam and gets reported.

And note: a template can reopen the conversation. Send an approved follow-up, they reply, and you have a service window again.

Marketing messages, honestly

You can send them. They are a distinct template category, they cost more, and they carry real risk to your quality rating.

If you do:

Only to people who opted in for marketing specifically. Somebody who agreed to order updates has not agreed to promotions. Keep the flags separate.

Rarely. Once a month is a lot on this channel.

Genuinely relevant. Based on what they bought, not a broadcast to everyone.

With an obvious opt-out, honoured immediately.

Many businesses are better off not doing this at all. The order updates and support conversations work partly because customers do not associate your number with promotion.

That is a real commercial trade-off, not caution for its own sake.

Measuring it

Conversations started, by source — which link, which QR code, which page.

Response time. The number most correlated with conversion.

Conversations becoming opportunities. Your qualification rate.

Opportunities becoming orders. Conversion.

Blocks and reports. Rising means something is wrong with what you are sending.

Compare WhatsApp against your other channels. Most businesses find enquiry volume rises and response time falls. Whether conversion is better depends on how quickly you reply — which is within your control.

What goes wrong

Enquiries staying in an app. No visibility, no measurement, no handover.

Slow replies. Removes the channel’s main advantage.

Treating it as a broadcast list. The fastest way to lose access.

No follow-up templates. The window closes and you cannot continue.

Mixing consent types. Marketing sent to people who signed up for order updates.

Nobody owning enquiries. They arrive and sit.

A sensible way to start

1. Connect WhatsApp to your CRM so conversations become leads
2. Add a click-to-chat link to your site, email signatures and invoices
3. Set a response time expectation and staff it
4. Prepare two follow-up templates and get them approved early
5. Record the source on every lead
6. Measure response time and conversion against your other channels
7. Leave promotional messaging alone until everything else is working

The short version

WhatsApp sales works when the customer starts the conversation. Make it easy for them to do that with links, buttons and QR codes.

Leads must reach your CRM, with a source, a transcript and an owner. An enquiry in somebody’s phone is not a lead.

Reply fast — it is the strongest lever you control.

And be careful with promotional messaging. The channel is valuable because customers trust it, and that lasts only while you send things they want.