Node.js Email Service Requires Robust Routing to Avoid Duplicate Support Tickets

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A technical article advises developers to prioritize system design over vendor features when choosing an email service for Node.js applications. It highlights a scenario where a gaming contact form could create duplicate support tickets if email routing is not handled idempotently. The author recommends storing the user's intent and routing decision in a database transaction before sending any email. This prevents retries from altering the decision or creating duplicate notifications. The core argument is that email should be treated as the final step of a durable pipeline, not a direct API call.

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