whatsapp blaster or mass sender

Dear Bidders, You need to deliver the software and let me test it BEFORE payment because I need to verify that messages get to phones in my area. If you do not have experience in this kind of project please don't bid. 1. I need a website or desktop app to send thousands of whatsapp messages. 2. You need to tell me how many messages can be sent every day or every hour. I need to send out more than 100k per day 3. I need to be able to choose between: text, image. 4. The list of contacts should be read from a plain text file. 5. Must be able to use several senders (channels) also loaded from a text file. 6. Reports need to show how many messages are successfully sent. 7. Your app or software should not require serial numbers or any form of license. 8. Payment will be made only after the software is delivered and fully tested. 9. Need to have whatsapp filter function.