You use the WhatsApp Business app. Leads come in, you reply when you can, nothing is tracked, and one person holds all the conversations on their phone. If that person is on leave, leads wait. If two people need to manage inquiries, they are sharing a single device. There is no pipeline, no follow-up system, and no history that a second person can see. The WhatsApp Business API is the version of WhatsApp built for teams - and this is what it does.

This guide explains what the WhatsApp Business API is, how it differs from the app you already use, what it costs, and how to get your number connected - written for business owners, not developers.

WhatsApp Business App vs WhatsApp Business API

There are two separate products from Meta for businesses. Most Sri Lankan businesses use the app. The API is what powers real lead management platforms like Ceytrex Flow.

What the WhatsApp Business API Actually Unlocks

Connecting your WhatsApp number to the API does not change anything visible to your customers. They still message the same number. The difference is entirely in what happens on your end - in the platform that receives and manages those messages.

• Multi-agent shared inbox - multiple team members see and respond to conversations from the same dashboard simultaneously, with no conflict or duplication
• Lead pipeline - every incoming message becomes a lead with a status: New, In Progress, Follow-up Pending, Converted, No Response
• Saved message templates - Meta-approved templates allow you to send structured messages outside the 24-hour customer service window, useful for follow-ups and appointment reminders
• Automated welcome messages - greet every new inquiry immediately, even outside working hours, buying time before a human agent responds
• Meta ads integration - leads from click-to-WhatsApp Facebook and Instagram ads are automatically captured with campaign source attribution
• Webhook integrations - connect your WhatsApp number to CRMs, dashboards, and other systems via API hooks

How Much Does the WhatsApp Business API Cost?

The API itself is provided by Meta and involves per-conversation charges - not per-message, but per 24-hour conversation window. Charges vary by conversation type and the country of the customer's phone number.

For most Sri Lankan SMEs receiving under 500 customer-initiated conversations per month, the Meta API charges are very low - often under $10 per month total. The first 1,000 service conversations per month per phone number are free. Marketing conversations (business-initiated) carry higher charges and require opt-in compliance.

On top of Meta's charges, you pay for the platform you use to access the API - such as Ceytrex Flow. This is where the team inbox, pipeline, follow-up scheduling, and analytics live.

How to Get the WhatsApp Business API - Step by Step

The setup process involves Meta's Business Verification and connecting to a Business Solution Provider (BSP) - a Meta-approved platform that handles the API integration. Ceytrex Flow is built on the Meta Cloud API, which means the technical connection is managed for you.

• Step 1 - Create a Meta Business Manager account at business.facebook.com. This is separate from your personal Facebook account and your business Facebook page.
• Step 2 - Complete Meta Business Verification. This confirms you are a legitimate business. You will need your business registration certificate or other official documentation. Verification takes 1–3 business days in most cases.
• Step 3 - Add a phone number to your WhatsApp Business Platform. This number must not be currently active on any WhatsApp account (personal or Business app). If your number is on the Business app, you will need to delete the app account first.
• Step 4 - Connect your number to Ceytrex Flow. This is done through a guided setup - you authorise Ceytrex Flow to access your WhatsApp Business number via the Meta Cloud API. Takes under 10 minutes.
• Step 5 - Verify your number. Meta will call or SMS the number with a verification code. Enter it in the setup flow.
• Step 6 - Your number is live on the API. All new incoming messages appear in your Ceytrex Flow dashboard. Your customers continue messaging the same number - nothing changes from their side.

What You Need Before You Start

• A Meta Business Manager account (business.facebook.com) - not a personal account
• A Facebook page linked to your business (required for Business Manager)
• A phone number that is not currently active on any WhatsApp account - personal or Business app
• Your business registration certificate or NIC for Meta Business Verification
• A Ceytrex Flow account - our team will walk you through the connection process

If your current WhatsApp Business app number is the number you want to use, you will need to delete the WhatsApp Business app account for that number before connecting it to the API. Your message history on the app will be lost, but all future conversations will be managed through your Ceytrex Flow dashboard. Your customers experience no interruption - they continue messaging the same number.

What Ceytrex Labs Handles for You

When you sign up for Ceytrex Flow, our team walks you through the Meta Business Manager setup, helps with the number connection process, and verifies that your API integration is live and working. If you are also running Meta ad campaigns, we can configure your click-to-WhatsApp ads to send leads directly into your Ceytrex Flow pipeline with campaign source tracking.

The technical setup is our responsibility. You should be managing leads in your new dashboard within one business day of starting the process - not troubleshooting API configurations on your own.

Frequently Asked Questions