{
    "success": true,
    "message": "Invoice email sent to zehraruhi82@gmail.com",
    "invoice_pdf_url": "https:\/\/procorporateleague.com\/email_api\/send_invoice_email.php?file=PCL_Invoice_PCL-INV-20261115075855.pdf",
    "invoice_no": "PCL-INV-20261115075855",
    "pdf_filename": "PCL_Invoice_PCL-INV-20261115075855.pdf",
    "whatsapp_result": {
        "success": false,
        "message": "Skipped WhatsApp send: email not successful, mobile missing, or invoice_pdf_url missing"
    }
}