Push notifications are small pop-up messages sent to users' devices by mobile apps or web browsers, typically brief and to the point, containing updates, reminders, promotional offers, logos, emojis, and links. SMS text messages, on the other hand, are limited to 160 characters in a text-only format, providing direct information in a straightforward manner. The main differences between push notifications and text messages lie in how they're received, delivered, and what they contain, with push notifications being more engaging and interactive, while SMS text messages offer reliability without internet connection. Businesses can choose between push notifications for sales and marketing offers, and SMS text messages for travel alerts, delivery updates, and appointment reminders, to maximize reach and engagement.