Is a GSM gateway the cheapest option for SMS verification?
A GSM gateway can be the most cost-effective choice for high-volume SMS verification when you control SIM sourcing, routing, and hardware—because it replaces per-message carrier fees with bulk SIM-based delivery, predictable airtime, and operational efficiencies that reduce cost-per-successful-OTP while improving local delivery rates. How do GSM verification gateways work? GSM gateways hold multiple SIMs and … Read more