WhatsApp Direct Chat is a free WhatsApp messaging app. It lets you send messages to anyone without saving their number in your contacts. It is a powerful app with a simple user interface. It has all the necessary tools to send and receive messages. It is compatible with WhatsApp in the USA. 

You can add recipients from a CSV file or your phone's contact list. It is user-friendly, so you don't need to know any coding language. It allows you to send WhatsApp messages in bulk. You can send them to all the contacts in your phone or to any numbers in the world.