web system for sending messages

We are looking for an individual/firm to help us with the whatsapp sending. Bidder must be able to prove previous experience of doing similar project. Bidder can either provide me a quote for sending bulk whatsapp per day along with the limitations, or can develop a bot software for us. Following are the functionalities required from the developed software: 1. Should be able to send and receive bulk whatsapp messages. Bidder needs to tell me how many whatsapp messages can be sent on hourly basis. 2. Provision for uploading contact list via text, csv or excel, xlsx. 3. Smart enough to segment the phone numbers into contact list as either sms or whatsapp ( whatsapp as a default preference) 4. Analysis of sending status and generation of report showing success and failure 5. If possible, send and receive text, images and videos. 6. Any limitations or challenges should be clearly outlined. Including the number of verified whats app numbers required for sending 2,0000 contacts. 7 - Reacting campaigns sent with their status (sent, received and read). The system should support hash channel upload in the admin area and configure how many messages I will send per imported hash channel per hour, minutes or seconds per day. example: I imported 1000 hash channels into the system, and set them up to send 100 messages a day, 10 messages every hour. This will give 100K of messages per day. The administration area should also have a part intended for setting up proxies and ips to prevent channel blocking. Channel format: channelnumber, key1, key2: 77472439792,0ozz+EvdBtVvL+vYJH4H9+gOJ/7FXCsStjyFNpfhGGM=,IERZF9VWmIDzGMNz6zLK7ikxCmzQQJ/7R+5GE4ldbnA=