POST /api/v1/whatsapp/send
Authorization: Bearer YOUR_TOKEN

{
  "phone": "+1234567890",
  "message": "Hello! Your order #5678 has been shipped.",
  "device_id": "YOUR_DEVICE_ID"
}

• Your customers primarily communicate via WhatsApp (common in Latin America, Europe, the Middle East, and many Asian markets).
• You want to send rich content: images, documents, or formatted text.
• You need read receipts and two-way conversation support.
• The recipient has WhatsApp installed and actively uses it.

• You need guaranteed delivery regardless of whether the recipient has internet or a specific app.
• You are sending OTPs, verification codes, or critical alerts that must reach any phone.
• The recipient may not have WhatsApp or their WhatsApp may be inactive.
• You are targeting markets where WhatsApp adoption is lower (e.g., parts of North America).