India has over 1.2 billion mobile subscribers. SMS open rates hover at 98%. Messages are read within 3 minutes on average — without an internet connection, without an app, and on every device from a ₹1,500 feature phone to the latest iPhone. Bulk SMS service in India is not a legacy channel. It is the backbone of how banks deliver OTPs, how hospitals send appointment reminders, how e-commerce brands confirm orders, and how retailers run their highest-converting sale campaigns
