Sending bulk WhatsApp messages typically involves using third-party services or software, as WhatsApp does not natively support bulk messaging for regular users. Here is a general step-by-step procedure using an official WhatsApp Business API and a third-party tool:

Step 1: Setting Up WhatsApp Business API

1. Register with Facebook:

   • Go to the Facebook for Developers website and create an account if you don't have one.
   • Create a new application and get your Facebook App ID.

2. Apply for WhatsApp Business API:

   • Apply for access to the WhatsApp Business API through the WhatsApp Business API page.
   • Submit the required documents and information for verification.

3. Set Up Hosting:

   • Choose your hosting option for the API (self-hosted or through a business solution provider).

4. Set Up Webhooks:

   • Configure webhooks to receive messages and delivery reports.

Step 2: Prepare Your Bulk Messaging Tool

1. Choose a Third-Party Service:

   • Select a service that supports WhatsApp Business API integration, such as Dwarfsms or other bulk messaging platforms.

2. Sign Up and Get API Credentials:

   • Sign up for the chosen service and get your API credentials (API key, token, etc.).

3. Set Up Your Account:

   • Follow the service's instructions to set up your account, configure your sender ID (WhatsApp number), and other necessary settings.

Step 3: Create and Send Bulk Messages

1. Prepare Your Message List:

   • Create a list of recipients, including their WhatsApp numbers, usually in a CSV or Excel file.

2. Compose Your Message:

   • Write your message content. Make sure to comply with WhatsApp's guidelines to avoid getting your number blocked.
   • Personalize your message if possible (e.g., using placeholders for names).

3. Upload Your Contacts:

   • Upload your list of contacts to the bulk messaging tool.

4. Configure Your Campaign:

   • Set up your message campaign in the tool, selecting your message, the list of recipients, and any scheduling options.

5. Send Messages:

   • Review your campaign and send the messages. Most tools will provide analytics and reports on message delivery and engagement.

Step 4: Monitor and Manage Responses

1. Check Delivery Reports:

   • Monitor the delivery reports to ensure your messages are being delivered successfully.

2. Respond to Replies:

   • Use the API or your chosen tool’s dashboard to manage and respond to incoming messages.

3. Adjust Campaigns as Needed:

   • Based on the performance and feedback, make any necessary adjustments to your future campaigns.

Step 5: Ensure Compliance and Best Practices

1. Follow WhatsApp Policies:

   • Ensure that your messaging practices comply with WhatsApp’s Business Policy and avoid spamming.

2. Obtain Consent:

   • Always have the recipients' consent to receive messages to avoid legal issues.

3. Provide Opt-Out Options:

   • Include an easy way for recipients to opt-out of future messages.

4. Monitor Performance:

   • Regularly monitor the performance of your campaigns and make improvements as needed.

Tools and Resources

• WhatsApp Business API Documentation: WhatsApp Business API
• Third-Party Services:
  • Dwarfsms Solutions

By following these steps, you can set up a system for sending bulk WhatsApp messages effectively and efficiently.