Developed a robust SMTP error handling enhancement for git-send-email within the microsoft/git repository, focusing on improving reliability and automation of email delivery workflows. Leveraging Perl for backend development, the work introduced an eval-based mechanism to capture all exceptions during SMTP authentication and sending, ensuring comprehensive error detection. A dedicated handle_smtp_error function was implemented to parse SMTP status codes, enabling precise classification of transient (4yz) and permanent (5yz) errors for smarter retry logic and clearer reporting. This update enhanced error handling and observability, reduced failed deliveries, and demonstrated strong skills in email integration, protocol management, and maintainable code practices.