With this robot you can send bulk message as desired. You have to setup the program database table first for daily task. Each record in that table means a day. for create every day program use another app in:
https://github.com/hamedsharifi/WhatsappRobotProgramGenerator
Application write sent and received messages in Postgre database. Be careful of count of messages you will send daily. WhatsApp may block you if the detect a spammy activity.