WhatsApp Chatbot for Business: Setup Guide & Best Practices (2026)

WhatsApp is the most-used messaging app on the planet, and for many UK businesses it's now the first channel customers reach for — ahead of email. The reason is simple: people already have the app open, and message open rates are dramatically higher than email.

If you're considering a WhatsApp chatbot for your business, here's what you need to know.

Why bother with WhatsApp at all

• It's where your customers already are.
• Open rates are ~95–98% versus ~20% for email.
• Two-way conversations are immediate.
• You can send rich content: images, PDFs, location, buttons.

How a WhatsApp chatbot is wired up

Behind the scenes, your business connects a WhatsApp Business number (a normal phone number, but dedicated to business use). Messages sent to that number are forwarded to your chatbot platform via the WhatsApp Business API. Your platform interprets them, drafts a reply, and sends it back through the API.

On Silux Chat you can connect a WhatsApp number from the admin dashboard and the same bot that powers your website widget will respond on WhatsApp. There's no separate bot to train.

Use cases that work on WhatsApp

The best WhatsApp use cases are short, transactional, and timely:

• Order confirmations and shipping updates.
• Appointment reminders and rescheduling.
• FAQ deflection ("what are your opening hours?").
• Booking confirmations.
• Lead capture from ad clicks (a "Click to WhatsApp" ad lands the user mid-conversation).

Long, complex conversations are usually better suited to website chat where the customer is already in research mode.

What WhatsApp's policies require

WhatsApp has stricter rules than website chat:

• **24-hour customer service window.** After a customer messages you, you have 24 hours to reply freely. After that, you can only send pre-approved message templates.
• **Opt-in for outbound.** You can't cold-message someone on WhatsApp. They have to have opted in (e.g. by ticking a box at checkout).
• **No spam.** WhatsApp will rate-limit and eventually block numbers that get reported.

The platform you choose should handle template approval and opt-in tracking for you. Silux Chat does this in the dashboard.

Setup in five steps

1. Pick a phone number that will be dedicated to WhatsApp Business (existing or new).
2. Connect it through your chat platform's WhatsApp setup flow.
3. Verify your business with Meta (takes a few days).
4. Build a small library of message templates (welcome, order confirmation, reminder, etc.).
5. Embed a "Chat on WhatsApp" button on your site to drive opt-ins.

After that, the bot you already use on your website can start replying on WhatsApp too. From the customer's point of view it's the same conversation, on whichever channel they prefer.