Assist me with Bulk Marketing

I want a web or desktop application that I can use to broadcast messages to 500k on Whatsapp messenger ---------------------------------------- The app must know if the mobile have are using Whatsapp The app must know if the recipient receive the message or not The app must give the ability to add/remove numbers (contacts) The app must be with source code must be able to broadcast to contact by uploading the contact using csv file. must be able to broadcast message by uploading using csv file. Auto handling of blacklist - if user request to be removed. able to broadcast text, picture, icon and various type of messages. able to schedule timing for broadcast. Able to generate a report for the broadcast based on various status. Able to send messages without being block/blacklisted by Whatsapp. Skills: android, blackberry, iphone Job Description: We're looking for a Social Media Marketer to help increase brand awareness and customer loyalty for our business.