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On this page
  • Official WhatsApp API Number Integration
  • Step-by-Step Guide
  • 1. Log In to Your iSlash Account
  • 2. Add a New Channel
  • 3. Integrate WhatsApp API with Facebook
  • 4. Finalize Setup in iSlash Platform
  • Additional Note
  1. iSlash Game-Changing Features
  2. Omnichannel Messaging: Elevating Business Communication to New Heights [2025 Updates]

WhatsApp Official API Integration

Easily connect your business to WhatsApp using our official API integration!

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Last updated 3 months ago

WhatsApp is one of the most widely used communication tools for businesses.

With iSlash AI, you can integrate WhatsApp Official API seamlessly into your workflow, enabling better customer engagement and faster response times.

Follow this step-by-step guide to connect your WhatsApp Business Account with iSlash AI!


Official WhatsApp API Number Integration

WhatsApp Business API does not have a user interface so you'll need to connect it to a messaging software like iSlash. Follow this step-by-step guide to set it up quickly and seamlessly.

You'll need two things to start:

to check if your phone number has registered with any WhatsApp services.

If the phone number has registered with WhatsApp Personal or WhatsApp Business, please use "" to migrate your account info, groups and setting from your current phone number to a new phone number.

or

before you .

This channel is configured by iSlash onboarding team when you subscribe the service.

Prior to the integration sync date, please send Business Manager (with Full Control) invitation to fbsystem@islash.io

Step-by-Step Guide

1. Log In to Your iSlash Account

2. Add a New Channel

2.1 Navigate to Settings > Channel.

2.2 Click on the “+” button to create a new channel.

2.3 Assign a unique name to your channel and select the appropriate time zone for your business.

2.4 Under the Platform section, choose WhatsApp Official API.

2.5 Enter Your WhatsApp API Number in the provided field.

2.6 Click the Save button to confirm your settings.

3. Integrate WhatsApp API with Facebook

After saving your channel settings, a blue button labelled “Continue with Facebook” will appear.

3.1 Click "Continue with Facebook"

3.2 You will be redirected to the Meta page. Click “Continue as” and then “Get Started”.

3.3 Fill in your Business Information, create a new WhatsApp Business Account (both).

Note: Enter a valid business website, as Facebook uses the website information to check compliance with WhatsApp's Commerce Policy.

3.4 Enter the Account Name and Display Name.

  • WhatsApp Business Account Name: Internal Reference in your business account

  • WhatsApp Business Display Name: is the name what your customer will see.

  • Category: Select the category that best describe your business.

3.5 Verify your WhatsApp Business number.

  • Choose either text message or phone call for verification.

  • If you choose text message, you will receive a verification code via SMS. If you choose a phone call, you will receive a call with the code.

Ensure the phone number you register for the WhatsApp Business API can receive both SMS and phone calls.

3.6 Enter the verification code and click Next.

3.6 On the next page, click Continue and then Finish to complete the setup.


4. Finalize Setup in iSlash Platform

Return to the iSlash platform and click Save again.

To ensure everything is working correctly, test the integration by using another phone number to send a message and verify the reply.


Additional Note


Hope this article helps you!

Begin by logging in to your using your credentials. Once logged in, navigate to the Settings tab.

2.7 Once you have completed the above steps, contact our to assist you in obtaining the verification code required to verify your number.

Make sure to use a phone number that has NOT been previously associated with other . This number should be exclusively dedicated to the WhatsApp Business Platform (API).

If you encounter this message while setting up WhatsApp API, you can click 'Learn more' for instructions on how to .

Click here
Change Phone Number
backing up your chat history on your mobile device/iCloud/Google Drive
delete your account
here
iSlash AI account
onboarding team
WhatsApp services
migrate an existing WhatsApp number to a new phone number
iSlash AI: WhatsApp API Number Integration Step-by-Step Guide
blue button labelled “Continue with Facebook”
Fill in your Business Information, Create a WhatsApp Business Account.
Complete your Business Portfolio and Verify.