This comprehensive 2026 guide explains everything businesses must know about OTP (One-Time Password) SMS service providers in India, focusing on delivery performance, security, hidden costs, and real-world impacts on customer experience and conversions. It highlights how delivery speed (especially sub-5-second delivery) is critical—slow OTPs increase user drop-offs—and why cheap provi... https://crm.smsgatewayhub.com/knowledge-base/article/sms-otp-service-providers-in-india-complete-2026-security-cost-guide