This complete guide explains what an OTP (One-Time Password) is and how secure OTP delivery systems work—especially for Indian businesses in 2026. An OTP is a unique, time-sensitive code generated for a single login, transaction, or verification attempt. Unlike regular passwords, it expires quickly and can’t be reused, making it a powerful tool to protect accounts and sensitive action... https://crm.smsgatewayhub.com/knowledge-base/article/what-is-otp-how-secure-otp-delivery-works