Push notification marketing is a powerful tool for reaching users directly. It allows advertisers to send timely and relevant messages to their audience. The key to success is targeting the right people with the right offer. Push notifications have high engagement rates because they appear instantly on users' devices. They are also cost-effective compared to other advertising methods. However, it's important to use them wisely. Sending too many notifications can annoy users. It’s best to test different messages and timings to find what works. Overall, push notification marketing can be very effective if used strategically.