How to Automate Bulk WhatsApp Business Account Verification

Description and use

An asynchronous pipeline that verifies thousands of phone numbers for WhatsApp and WhatsApp Business accounts, enabling precise segmentation without blocking the main application.

Problem

Developers need to determine whether contacts use standard or WhatsApp Business accounts to segment outreach efficiently.

Outcome

Batch verification of thousands of phone numbers, returning clear flags for WhatsApp and Business account registration, enabling precise segmentation without blocking application threads.

Workflow

• Prepare a plain text file with one E.164 phone number per line.
• Send a POST request to /v1/tasks with X-API-Key and task_type=ws_business, including the file.
• Store the returned task_id for tracking.
• Poll /v1/gettasks with the task_id until status is "exported".
• When exported, download the result_url file.
• Parse the CSV to extract number, whatsapp, and business flags.
• Integrate the flags into downstream data pipelines.
• Handle errors (400, 503) with retry logic and respect service limits.

Evidence

The API will return a task_id. Store this identifier, as it is required to track the progress of your batch.

Source

Once the status reaches exported, the response will contain a result_url. Download the file from this URL to access your processed data.

Source