Go SMS Provider Guardrails for Edtech Security Notifications and OTP Verification
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dev.to
Suppress a destination only after a durable, recipient-specific failure; retry temporary delivery failures with a bounded schedule, and keep OTP fallback separate from security-notification delivery. That rule matters more than the provider logo. In an edtech system, one recycled or mistyped guardian number can otherwise produce repeated sends long after the first failure signal. TL;DR: put a provider-neutral delivery ledger and suppression registry between the application and every SMS API. No