Fashion App Notification Strategy

I need a clear, actionable strategy for push notifications in my fashion shopping app. The focus is on NEW ARRIVALS alerts that fire the moment a user browses a specific category—no delays, the message must go out immediately... (Budget: ₹12500 - ₹37500 INR, Jobs: Analytics, App Development, Digital Marketing, Mobile App Development, Mobile App Testing, Mobile Development, User Experience Research, User Interface / IA)