API Bulk Whatsapp

Developing an API to send whatsapp bulk messages, this API should send at least 10 messages per second, totaling 600 per minute and 36,000 per hour. Develop a modern, beautiful and friendly interface to manage the system ... The whole process will work like this: I read a QR code with a valid phone number to send whatsapp and I chose an avatar for that number. 1 - I create a name for this project. 2 - I import the base in excel or txt containing 100k or 200k or 300k of whatsapp phones for the system. 3 - I choose the type of sending: text, image, audio or video. 4 - I choose if I want to send it now or later (scheduling). 5 - If you are not scheduling, send all messages imported at this time. (import capacity of at least 100k per shipment). 6 - Provide a way to track shipments with the delivery status option as: Sent, Received, Read, and Failed. 7 - generate reports after uploads with quantitative charts and in%, sending status as Sent, Received, Read and Failed to numbers that do not have whatsapp. 8 - Have the option of importing the report to excel for future analysis. 9 - The system should show if someone sends some answers and allows me to reply one by one or all at once with some default text automatically. 10 - Area for administration of all this content. Thank you