Website Whatsapp Bulk Sender(Php Aplication)

PLEASE ADD THE REAL COST OF DEVELOPMENT, IF NOT INCLUDED, WILL NOT BE TAKEN INTO ACCOUNT! I need a web system to send text, images, video and files to whatsapp The system must have the capacity to send high amounts of messages at least 500,000 per day. The system will only be accessed with username and password (will be the administrator). The administrator can create more users that are or are not administrators or normal users to send messages. In the creation of users you can assign them the amount of messages they can send daily and the role they will play. They can create scheduled marketing campaigns or be sent immediately Each user will have their own dashboard to manage their campaigns and save them in the database. You can search campaigns by date, by name, etc. (normal user) the administrator can search the campaigns by date, name of the campaign, or the campaigns of a particular user. The report of the campaigns sent will generate the following: If the number had or not whatsapp If you received and read (time, day) the message If the person who received the message clicked on banned All of these reports should be exported in pdf or .xls Remember.... System will wok with channels. Only accept the project if you have EXPERIENCE IN THE THEME. Payment will be made or charged for milestone, but full payment will be made when the system has been tested! thanks for the interest!