Niches with the highest opt-in rates for push ads typically offer time-sensitive value, personalization, or frequent updates. E-commerce, especially in fashion and electronics, performs well due to flash sales and product restocks. News and media sites also see high opt-ins, as users want instant updates on breaking stories or niche interests like sports or entertainment. Finance and crypto niches attract opt-ins through alerts on price changes, market trends, or investment tips. Additionally, travel and deal aggregator sites perform strongly, offering price drops and limited-time offers. What drives high opt-in rates across these niches is the promise of timely, relevant content. When users expect real-time value or exclusive deals, they are more likely to subscribe to push notifications.