Todook allows you to easily create WhatsApp bots for free to automate conversations between your business and your customers using the official WhatsApp API (WhatsApp Cloud API).
Google Business Messages is a mobile conversational channel that combines entry points on Google Maps, Google Search, and brand websites to create rich messaging experiences that delight customers and drive business results.
PayPal is an international payment gateway where you can accept payments from many countries in the world. If you are running a business or eCommerce store worldwide, then PayPal gateway will help you to sell your products worldwide.