How to Build Reliable Password-Reset Notifications Using Expiry-Aware State Machines

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A Node.js design pattern recommends tracking email delivery through explicit states before triggering an SMS fallback for password-reset notifications. The core principle is that the reset token's expiry window — not a fixed timer — should govern when and whether a fallback message is sent. Sending a text too late risks delivering a dead link, creating confusion for users and extra load for support teams. Developers are advised to use a durable notification record with states such as email_pending, email_delivered, text_pending, and expired, keeping reset secrets out of logs and event payloads. The approach replaces guesswork with delivery evidence, ensuring support agents can clearly trace what happened during any failed reset attempt.

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