One of the most common uses of bulk SMS is OTP and verification messages. Every time you log in to an app or make an online payment, you receive a one-time password by SMS. It’s simple, quick, and secure.
Another use case is promotions and marketing campaigns. Stores, e-commerce sites, and restaurants often send discount codes, festival offers, or “limited-time” deals directly to their customers’ phones. Because SMS has such high open rates, these campaigns work really well.
Bulk SMS is also used for alerts and notifications. Banks send transaction messages, delivery apps send tracking updates, and schools send exam schedules. These updates keep customers informed in real time. 
Then there are reminders. Hospitals send appointment reminders, service centres notify about due dates, and events companies share reminders before a program starts. These little nudges save time and reduce confusion.
In short, bulk SMS has endless uses. It helps businesses connect with customers for security, marketing, updates, and reminders—all through one simple channel.