Send an outbound SMS or MMS message

{
  "to": "+1234567890",
  "message": "Hello! This is a test message.",
  "workspaceId": "123e4567-e89b-12d3-a456-426614174000"
}

{
  "to": "+1234567890",
  "message": "Hi {{firstName}}, your appointment on {{appointmentDate}} is confirmed!",
  "workspaceId": "123e4567-e89b-12d3-a456-426614174000",
  "contactId": "456e7890-e89b-12d3-a456-426614174001"
}

{
  "to": "+1234567890",
  "message": "Check out this awesome product!",
  "mediaUrl": "https://example.com/product-image.jpg",
  "workspaceId": "123e4567-e89b-12d3-a456-426614174000",
  "campaignId": "789e1234-e89b-12d3-a456-426614174002"
}

{
  "to": "+1234567890",
  "message": "Reminder: Your appointment is tomorrow at 2 PM",
  "workspaceId": "123e4567-e89b-12d3-a456-426614174000",
  "scheduledTime": "2024-02-15T14:00:00Z",
  "priority": "high"
}