Render Blocks Outbound SMTP: Developer Fixes Email Delivery by Routing via Google Cloud

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Developers deploying applications on Render may find that outbound SMTP connections are blocked by the platform, causing emails to silently fail in production despite working correctly on localhost. Common symptoms include undelivered password reset emails, OTP failures, and Nodemailer timeout errors such as ETIMEDOUT or ECONNREFUSED. One developer encountered this issue while deploying a project on Render and spent significant time ruling out misconfigurations in SMTP credentials and environment variables before identifying the hosting environment as the root cause. The fix involved offloading email-sending functionality to a Google Cloud service, which permitted the required SMTP connections and restored email delivery immediately. Developers facing similar issues are advised to check Render logs for SMTP errors and consider routing email through a cloud provider with fewer outbound networking restrictions.

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