Whatsapp Bulk Sending Website

General information for the business: Bulk Sending for Whatsapp sending
Database management system (DBMS): MySQL
Description of requirements/functionality: to me
Need to develop an PHP script whatsApp with this capabilities to work like whatsapp.


1- send bulk messages to whatsapp contacts which 1+ million daily.
2- ability to import/export bulk .txt/.csv contain mobile numbers
3- ability to filter active contact list with options ( no have whatsapp- last seen )
4- ability to have language files to add more then 1 Lang
5- ability to add/remove mobile numbers / IMEI , to send messages from .
6- ability to customize send messages and customize how much message to be sent hourly and which numbers used to send the message from .
7- ability to view recent activity and messages history


8- ability to support the script for any updates later on which can be made from whatsapp end . ( will be paid when doing but it will be needed URGENT when needed )
9- ability to upgrade

Some more details for the application asking to do:
* I want to send single or bulk whatsapp (text, photo, audio, Video, vcard..location)

* I need to put a schedule for sending bulk
* Send a test to one or many numbers before send bulk

you can check this websites use them as example like what I need:

http://www.whatsgateway.com/
http://www.whatsbulk.com/
http://expresswapp.net/

Thanks in advance
Extra notes: