Choose a module that supports multiple gateways like Twilio , Wati , or Chat-API . This lets you shop for the cheapest message rates rather than being locked into one high-priced provider.
Most nulled WHMCS modules contain obfuscated code or base64 injections. These scripts can leak your entire client database , including sensitive contact info and invoice details, to the person who cracked it. whmcs whatsapp notification module nulled exclusive