SMS Fallback prevents verification disasters by routing codes through text channels when WhatsApp delivery stalls. Indian businesses lose crores monthly to OTP failures, making backup systems non-negotiable. This guide explains how Anantya.ai builds SMS Fallback infrastructure that recovers failed deliveries in under five seconds, maintaining seamless user experience. Includes data-dr... https://anantya.ai/blog/sms-fallback-for-whatsapp-otp-india/