Project Whatsapp Bulk Version Android With The Support Of Several Features

I want to make an ultimate bulk whatsapp application with the support of several features
we can make a written cooperation agreement through digital freelance, as for the feature I want is

- MENU LOGIN USER FREE & PREMIUM PACKAGE
- MENU GROUP OR CAMPAIGN EXAMPLE CATEGORY TARGET LIST
- MENU CONTACT LIST IMPORT DATABASE TARGET OR DESTINATION BASED ON GROUP WHICH IS MADE
- IMPORT CONTACT MANUAL INPUT
- IMPORT CONTACT IN HANDPHONE INTEGRATION WA
- IMPORT TXT
- IMPORT MANUAL ( COPY PATE OR INPUT NUMBER )
- IMPORT CSV
- MENU SEND MESSAGE RELATED TO SEND MESSAGES FOR PURPOSE, SUPPORT CAPTION, SUPPORT MESSAGE TEXT, SUPPORT MEDIA MULTI IMAGE, SINGEL IMAGE, VIDIO, AUDIO, DOCUMENT ALL, DLL
- MENU SEND HISTORY WHATSAPP BULK
- MENU AUTOREPLY
- MENU SCHEDULE SEND WHATSAPP BULK
- MENU GROUP GRABBER ( TAKE A WHATSAPP NUMBER IN THE GROUP )
- MENU SUPER GROUP SENDER ( SEND MESSAGE IN GROUP WHATSAPP )
- MENU B2B LEAD EXTRACTOR ( SCRAPPING GETTING DATA ON GOOGLE MAP BY KEYWORD AND CITY OF ORIGIN ) RESULTS OF DATA OBTAINED CAN BE STORED IN GROUP OR EXPORT XLS, CSV, TXT, XLS
- MENU DIRECT MESSAGE
- MENU UNSUBSCRIBED TARGET CONTACT
this menu is there when we want to send a bulk whatsapp message to the target, and there is an option to check add option to unscribe
This menu functions for if the target does not want to receive the blast then they simply send an unsubscribe message then the message will not be sent again to that target, and the target data that refuses will be included in this list
- SETTING MENU ( daily limit set DELIVERY LIMIT PER DAY , one shot contact limit DELIVERY DISTRIBUTION OF THE NUMBER OF DELIVERY DAY )
- MENU CONTACT US INFORMASION DINAMIC INPUT IN PANEL ADMIN
- PREMIUM PURCHASE MENU INTEGRATION PAYMEND GATEWAY PLAYSTORE

for an example more or less like this and there are some additions, please look and try first for the features
example : https://play.google.com/store/apps/details?id=com.invotech.whatspromo&hl=id&gl=US

all applications are dynamic